257509980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:313

約数の個数: 288

約数和(自身を含む): 978432000

約数和(自身を除く): 720922020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 79, 84, 90, 91, 105, 117, 126, 130, 140, 156, 158, 180, 182, 195, 199, 210, 234, 237, 252, 260, 273, 315, 316, 364, 390, 395, 398, 420, 455, 468, 474, 546, 553, 585, 597, 630, 711, 780, 790, 796, 819, 910, 948, 995, 1027, 1092, 1106, 1170, 1185, 1194, 1260, 1365, 1393, 1422, 1580, 1638, 1659, 1791, 1820, 1990, 2054, 2212, 2340, 2370, 2388, 2587, 2730, 2765, 2786, 2844, 2985, 3081, 3276, 3318, 3555, 3582, 3980, 4095, 4108, 4179, 4740, 4977, 5135, 5174, 5460, 5530, 5572, 5970, 6162, 6636, 6965, 7110, 7164, 7189, 7761, 8190, 8295, 8358, 8955, 9243, 9954, 10270, 10348, 11060, 11940, 12324, 12537, 12935, 13930, 14220, 14378, 15405, 15522, 15721, 16380, 16590, 16716, 17910, 18109, 18486, 19908, 20540, 20895, 21567, 23283, 24885, 25074, 25870, 27860, 28756, 30810, 31044, 31442, 33180, 35820, 35945, 36218, 36972, 38805, 41790, 43134, 46215, 46566, 47163, 49770, 50148, 51740, 54327, 61620, 62685, 62884, 64701, 71890, 72436, 77610, 78605, 83580, 86268, 90545, 92430, 93132, 94326, 99540, 107835, 108654, 110047, 116415, 125370, 129402, 141489, 143780, 155220, 157210, 162981, 181090, 184860, 188652, 204373, 215670, 217308, 220094, 232830, 235815, 250740, 258804, 271635, 282978, 314420, 323505, 325962, 330141, 362180, 408746, 431340, 440188, 465660, 471630, 543270, 550235, 565956, 613119, 647010, 651924, 660282, 707445, 814905, 817492, 943260, 990423, 1021865, 1086540, 1100470, 1226238, 1294020, 1320564, 1414890, 1430611, 1629810, 1650705, 1839357, 1980846, 2043730, 2200940, 2452476, 2829780, 2861222, 3065595, 3259620, 3301410, 3678714, 3961692, 4087460, 4291833, 4952115, 5722444, 6131190, 6602820, 7153055, 7357428, 8583666, 9196785, 9904230, 12262380, 12875499, 14306110, 17167332, 18393570, 19808460, 21459165, 25750998, 28612220, 36787140, 42918330, 51501996, 64377495, 85836660, 128754990, 257509980]

約数ペア:

[(1, 257509980), (2, 128754990), (3, 85836660), (4, 64377495), (5, 51501996), (6, 42918330), (7, 36787140), (9, 28612220), (10, 25750998), (12, 21459165), (13, 19808460), (14, 18393570), (15, 17167332), (18, 14306110), (20, 12875499), (21, 12262380), (26, 9904230), (28, 9196785), (30, 8583666), (35, 7357428), (36, 7153055), (39, 6602820), (42, 6131190), (45, 5722444), (52, 4952115), (60, 4291833), (63, 4087460), (65, 3961692), (70, 3678714), (78, 3301410), (79, 3259620), (84, 3065595), (90, 2861222), (91, 2829780), (105, 2452476), (117, 2200940), (126, 2043730), (130, 1980846), (140, 1839357), (156, 1650705), (158, 1629810), (180, 1430611), (182, 1414890), (195, 1320564), (199, 1294020), (210, 1226238), (234, 1100470), (237, 1086540), (252, 1021865), (260, 990423), (273, 943260), (315, 817492), (316, 814905), (364, 707445), (390, 660282), (395, 651924), (398, 647010), (420, 613119), (455, 565956), (468, 550235), (474, 543270), (546, 471630), (553, 465660), (585, 440188), (597, 431340), (630, 408746), (711, 362180), (780, 330141), (790, 325962), (796, 323505), (819, 314420), (910, 282978), (948, 271635), (995, 258804), (1027, 250740), (1092, 235815), (1106, 232830), (1170, 220094), (1185, 217308), (1194, 215670), (1260, 204373), (1365, 188652), (1393, 184860), (1422, 181090), (1580, 162981), (1638, 157210), (1659, 155220), (1791, 143780), (1820, 141489), (1990, 129402), (2054, 125370), (2212, 116415), (2340, 110047), (2370, 108654), (2388, 107835), (2587, 99540), (2730, 94326), (2765, 93132), (2786, 92430), (2844, 90545), (2985, 86268), (3081, 83580), (3276, 78605), (3318, 77610), (3555, 72436), (3582, 71890), (3980, 64701), (4095, 62884), (4108, 62685), (4179, 61620), (4740, 54327), (4977, 51740), (5135, 50148), (5174, 49770), (5460, 47163), (5530, 46566), (5572, 46215), (5970, 43134), (6162, 41790), (6636, 38805), (6965, 36972), (7110, 36218), (7164, 35945), (7189, 35820), (7761, 33180), (8190, 31442), (8295, 31044), (8358, 30810), (8955, 28756), (9243, 27860), (9954, 25870), (10270, 25074), (10348, 24885), (11060, 23283), (11940, 21567), (12324, 20895), (12537, 20540), (12935, 19908), (13930, 18486), (14220, 18109), (14378, 17910), (15405, 16716), (15522, 16590), (15721, 16380)]