20708380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1$

素因数の和:164

約数の個数: 144

約数和(自身を含む): 58949856

約数和(自身を除く): 38241476

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 34, 35, 44, 49, 55, 68, 70, 77, 85, 98, 110, 113, 119, 140, 154, 170, 187, 196, 220, 226, 238, 245, 308, 340, 374, 385, 452, 476, 490, 539, 565, 595, 748, 770, 791, 833, 935, 980, 1078, 1130, 1190, 1243, 1309, 1540, 1582, 1666, 1870, 1921, 2156, 2260, 2380, 2486, 2618, 2695, 3164, 3332, 3740, 3842, 3955, 4165, 4972, 5236, 5390, 5537, 6215, 6545, 7684, 7910, 8330, 8701, 9163, 9605, 10780, 11074, 12430, 13090, 13447, 15820, 16660, 17402, 18326, 19210, 21131, 22148, 24860, 26180, 26894, 27685, 34804, 36652, 38420, 42262, 43505, 45815, 53788, 55370, 60907, 67235, 84524, 87010, 91630, 94129, 105655, 110740, 121814, 134470, 147917, 174020, 183260, 188258, 211310, 243628, 268940, 295834, 304535, 376516, 422620, 470645, 591668, 609070, 739585, 941290, 1035419, 1218140, 1479170, 1882580, 2070838, 2958340, 4141676, 5177095, 10354190, 20708380]

約数ペア:

[(1, 20708380), (2, 10354190), (4, 5177095), (5, 4141676), (7, 2958340), (10, 2070838), (11, 1882580), (14, 1479170), (17, 1218140), (20, 1035419), (22, 941290), (28, 739585), (34, 609070), (35, 591668), (44, 470645), (49, 422620), (55, 376516), (68, 304535), (70, 295834), (77, 268940), (85, 243628), (98, 211310), (110, 188258), (113, 183260), (119, 174020), (140, 147917), (154, 134470), (170, 121814), (187, 110740), (196, 105655), (220, 94129), (226, 91630), (238, 87010), (245, 84524), (308, 67235), (340, 60907), (374, 55370), (385, 53788), (452, 45815), (476, 43505), (490, 42262), (539, 38420), (565, 36652), (595, 34804), (748, 27685), (770, 26894), (791, 26180), (833, 24860), (935, 22148), (980, 21131), (1078, 19210), (1130, 18326), (1190, 17402), (1243, 16660), (1309, 15820), (1540, 13447), (1582, 13090), (1666, 12430), (1870, 11074), (1921, 10780), (2156, 9605), (2260, 9163), (2380, 8701), (2486, 8330), (2618, 7910), (2695, 7684), (3164, 6545), (3332, 6215), (3740, 5537), (3842, 5390), (3955, 5236), (4165, 4972)]