18688020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 60258240

約数和(自身を除く): 41570220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 97, 114, 130, 156, 169, 190, 194, 195, 228, 247, 260, 285, 291, 338, 380, 388, 390, 485, 494, 507, 570, 582, 676, 741, 780, 845, 970, 988, 1014, 1140, 1164, 1235, 1261, 1455, 1482, 1690, 1843, 1940, 2028, 2470, 2522, 2535, 2910, 2964, 3211, 3380, 3686, 3705, 3783, 4940, 5044, 5070, 5529, 5820, 6305, 6422, 7372, 7410, 7566, 9215, 9633, 10140, 11058, 12610, 12844, 14820, 15132, 16055, 16393, 18430, 18915, 19266, 22116, 23959, 25220, 27645, 32110, 32786, 36860, 37830, 38532, 47918, 48165, 49179, 55290, 64220, 65572, 71877, 75660, 81965, 95836, 96330, 98358, 110580, 119795, 143754, 163930, 192660, 196716, 239590, 245895, 287508, 311467, 327860, 359385, 479180, 491790, 622934, 718770, 934401, 983580, 1245868, 1437540, 1557335, 1868802, 3114670, 3737604, 4672005, 6229340, 9344010, 18688020]

約数ペア:

[(1, 18688020), (2, 9344010), (3, 6229340), (4, 4672005), (5, 3737604), (6, 3114670), (10, 1868802), (12, 1557335), (13, 1437540), (15, 1245868), (19, 983580), (20, 934401), (26, 718770), (30, 622934), (38, 491790), (39, 479180), (52, 359385), (57, 327860), (60, 311467), (65, 287508), (76, 245895), (78, 239590), (95, 196716), (97, 192660), (114, 163930), (130, 143754), (156, 119795), (169, 110580), (190, 98358), (194, 96330), (195, 95836), (228, 81965), (247, 75660), (260, 71877), (285, 65572), (291, 64220), (338, 55290), (380, 49179), (388, 48165), (390, 47918), (485, 38532), (494, 37830), (507, 36860), (570, 32786), (582, 32110), (676, 27645), (741, 25220), (780, 23959), (845, 22116), (970, 19266), (988, 18915), (1014, 18430), (1140, 16393), (1164, 16055), (1235, 15132), (1261, 14820), (1455, 12844), (1482, 12610), (1690, 11058), (1843, 10140), (1940, 9633), (2028, 9215), (2470, 7566), (2522, 7410), (2535, 7372), (2910, 6422), (2964, 6305), (3211, 5820), (3380, 5529), (3686, 5070), (3705, 5044), (3783, 4940)]