256723740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2239}}^1$

素因数の和:2281

約数の個数: 216

約数和(自身を含む): 975985920

約数和(自身を除く): 719262180

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, 49, 52, 60, 63, 65, 70, 78, 84, 90, 91, 98, 105, 117, 126, 130, 140, 147, 156, 180, 182, 195, 196, 210, 234, 245, 252, 260, 273, 294, 315, 364, 390, 420, 441, 455, 468, 490, 546, 585, 588, 630, 637, 735, 780, 819, 882, 910, 980, 1092, 1170, 1260, 1274, 1365, 1470, 1638, 1764, 1820, 1911, 2205, 2239, 2340, 2548, 2730, 2940, 3185, 3276, 3822, 4095, 4410, 4478, 5460, 5733, 6370, 6717, 7644, 8190, 8820, 8956, 9555, 11195, 11466, 12740, 13434, 15673, 16380, 19110, 20151, 22390, 22932, 26868, 28665, 29107, 31346, 33585, 38220, 40302, 44780, 47019, 57330, 58214, 62692, 67170, 78365, 80604, 87321, 94038, 100755, 109711, 114660, 116428, 134340, 141057, 145535, 156730, 174642, 188076, 201510, 203749, 219422, 235095, 261963, 282114, 291070, 313460, 329133, 349284, 403020, 407498, 436605, 438844, 470190, 523926, 548555, 564228, 582140, 611247, 658266, 705285, 814996, 873210, 940380, 987399, 1018745, 1047852, 1097110, 1222494, 1309815, 1316532, 1410570, 1426243, 1645665, 1746420, 1833741, 1974798, 2037490, 2194220, 2444988, 2619630, 2821140, 2852486, 3056235, 3291330, 3667482, 3949596, 4074980, 4278729, 4936995, 5239260, 5704972, 6112470, 6582660, 7131215, 7334964, 8557458, 9168705, 9873990, 12224940, 12836187, 14262430, 17114916, 18337410, 19747980, 21393645, 25672374, 28524860, 36674820, 42787290, 51344748, 64180935, 85574580, 128361870, 256723740]

約数ペア:

[(1, 256723740), (2, 128361870), (3, 85574580), (4, 64180935), (5, 51344748), (6, 42787290), (7, 36674820), (9, 28524860), (10, 25672374), (12, 21393645), (13, 19747980), (14, 18337410), (15, 17114916), (18, 14262430), (20, 12836187), (21, 12224940), (26, 9873990), (28, 9168705), (30, 8557458), (35, 7334964), (36, 7131215), (39, 6582660), (42, 6112470), (45, 5704972), (49, 5239260), (52, 4936995), (60, 4278729), (63, 4074980), (65, 3949596), (70, 3667482), (78, 3291330), (84, 3056235), (90, 2852486), (91, 2821140), (98, 2619630), (105, 2444988), (117, 2194220), (126, 2037490), (130, 1974798), (140, 1833741), (147, 1746420), (156, 1645665), (180, 1426243), (182, 1410570), (195, 1316532), (196, 1309815), (210, 1222494), (234, 1097110), (245, 1047852), (252, 1018745), (260, 987399), (273, 940380), (294, 873210), (315, 814996), (364, 705285), (390, 658266), (420, 611247), (441, 582140), (455, 564228), (468, 548555), (490, 523926), (546, 470190), (585, 438844), (588, 436605), (630, 407498), (637, 403020), (735, 349284), (780, 329133), (819, 313460), (882, 291070), (910, 282114), (980, 261963), (1092, 235095), (1170, 219422), (1260, 203749), (1274, 201510), (1365, 188076), (1470, 174642), (1638, 156730), (1764, 145535), (1820, 141057), (1911, 134340), (2205, 116428), (2239, 114660), (2340, 109711), (2548, 100755), (2730, 94038), (2940, 87321), (3185, 80604), (3276, 78365), (3822, 67170), (4095, 62692), (4410, 58214), (4478, 57330), (5460, 47019), (5733, 44780), (6370, 40302), (6717, 38220), (7644, 33585), (8190, 31346), (8820, 29107), (8956, 28665), (9555, 26868), (11195, 22932), (11466, 22390), (12740, 20151), (13434, 19110), (15673, 16380)]