20218380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^2$

素因数の和:85

約数の個数: 216

約数和(自身を含む): 74137392

約数和(自身を除く): 53919012

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 23, 26, 28, 30, 35, 39, 42, 46, 49, 52, 60, 65, 69, 70, 78, 84, 91, 92, 98, 105, 115, 130, 138, 140, 147, 156, 161, 182, 195, 196, 210, 230, 245, 260, 273, 276, 294, 299, 322, 345, 364, 390, 420, 455, 460, 483, 490, 529, 546, 588, 598, 637, 644, 690, 735, 780, 805, 897, 910, 966, 980, 1058, 1092, 1127, 1196, 1274, 1365, 1380, 1470, 1495, 1587, 1610, 1794, 1820, 1911, 1932, 2093, 2116, 2254, 2415, 2548, 2645, 2730, 2940, 2990, 3174, 3185, 3220, 3381, 3588, 3703, 3822, 4186, 4485, 4508, 4830, 5290, 5460, 5635, 5980, 6279, 6348, 6370, 6762, 6877, 7406, 7644, 7935, 8372, 8970, 9555, 9660, 10465, 10580, 11109, 11270, 12558, 12740, 13524, 13754, 14651, 14812, 15870, 16905, 17940, 18515, 19110, 20631, 20930, 22218, 22540, 25116, 25921, 27508, 29302, 31395, 31740, 33810, 34385, 37030, 38220, 41262, 41860, 43953, 44436, 48139, 51842, 55545, 58604, 62790, 67620, 68770, 73255, 74060, 77763, 82524, 87906, 96278, 103155, 103684, 111090, 125580, 129605, 137540, 144417, 146510, 155526, 175812, 192556, 206310, 219765, 222180, 240695, 259210, 288834, 293020, 311052, 336973, 388815, 412620, 439530, 481390, 518420, 577668, 673946, 722085, 777630, 879060, 962780, 1010919, 1347892, 1444170, 1555260, 1684865, 2021838, 2888340, 3369730, 4043676, 5054595, 6739460, 10109190, 20218380]

約数ペア:

[(1, 20218380), (2, 10109190), (3, 6739460), (4, 5054595), (5, 4043676), (6, 3369730), (7, 2888340), (10, 2021838), (12, 1684865), (13, 1555260), (14, 1444170), (15, 1347892), (20, 1010919), (21, 962780), (23, 879060), (26, 777630), (28, 722085), (30, 673946), (35, 577668), (39, 518420), (42, 481390), (46, 439530), (49, 412620), (52, 388815), (60, 336973), (65, 311052), (69, 293020), (70, 288834), (78, 259210), (84, 240695), (91, 222180), (92, 219765), (98, 206310), (105, 192556), (115, 175812), (130, 155526), (138, 146510), (140, 144417), (147, 137540), (156, 129605), (161, 125580), (182, 111090), (195, 103684), (196, 103155), (210, 96278), (230, 87906), (245, 82524), (260, 77763), (273, 74060), (276, 73255), (294, 68770), (299, 67620), (322, 62790), (345, 58604), (364, 55545), (390, 51842), (420, 48139), (455, 44436), (460, 43953), (483, 41860), (490, 41262), (529, 38220), (546, 37030), (588, 34385), (598, 33810), (637, 31740), (644, 31395), (690, 29302), (735, 27508), (780, 25921), (805, 25116), (897, 22540), (910, 22218), (966, 20930), (980, 20631), (1058, 19110), (1092, 18515), (1127, 17940), (1196, 16905), (1274, 15870), (1365, 14812), (1380, 14651), (1470, 13754), (1495, 13524), (1587, 12740), (1610, 12558), (1794, 11270), (1820, 11109), (1911, 10580), (1932, 10465), (2093, 9660), (2116, 9555), (2254, 8970), (2415, 8372), (2548, 7935), (2645, 7644), (2730, 7406), (2940, 6877), (2990, 6762), (3174, 6370), (3185, 6348), (3220, 6279), (3381, 5980), (3588, 5635), (3703, 5460), (3822, 5290), (4186, 4830), (4485, 4508)]