31418920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 128

約数和(自身を含む): 82736640

約数和(自身を除く): 51317720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 37, 40, 46, 52, 65, 71, 74, 92, 104, 115, 130, 142, 148, 184, 185, 230, 260, 284, 296, 299, 355, 370, 460, 481, 520, 568, 598, 710, 740, 851, 920, 923, 962, 1196, 1420, 1480, 1495, 1633, 1702, 1846, 1924, 2392, 2405, 2627, 2840, 2990, 3266, 3404, 3692, 3848, 4255, 4615, 4810, 5254, 5980, 6532, 6808, 7384, 8165, 8510, 9230, 9620, 10508, 11063, 11960, 13064, 13135, 16330, 17020, 18460, 19240, 21016, 21229, 22126, 26270, 32660, 34040, 34151, 36920, 42458, 44252, 52540, 55315, 60421, 65320, 68302, 84916, 88504, 105080, 106145, 110630, 120842, 136604, 169832, 170755, 212290, 221260, 241684, 273208, 302105, 341510, 424580, 442520, 483368, 604210, 683020, 785473, 849160, 1208420, 1366040, 1570946, 2416840, 3141892, 3927365, 6283784, 7854730, 15709460, 31418920]

約数ペア:

[(1, 31418920), (2, 15709460), (4, 7854730), (5, 6283784), (8, 3927365), (10, 3141892), (13, 2416840), (20, 1570946), (23, 1366040), (26, 1208420), (37, 849160), (40, 785473), (46, 683020), (52, 604210), (65, 483368), (71, 442520), (74, 424580), (92, 341510), (104, 302105), (115, 273208), (130, 241684), (142, 221260), (148, 212290), (184, 170755), (185, 169832), (230, 136604), (260, 120842), (284, 110630), (296, 106145), (299, 105080), (355, 88504), (370, 84916), (460, 68302), (481, 65320), (520, 60421), (568, 55315), (598, 52540), (710, 44252), (740, 42458), (851, 36920), (920, 34151), (923, 34040), (962, 32660), (1196, 26270), (1420, 22126), (1480, 21229), (1495, 21016), (1633, 19240), (1702, 18460), (1846, 17020), (1924, 16330), (2392, 13135), (2405, 13064), (2627, 11960), (2840, 11063), (2990, 10508), (3266, 9620), (3404, 9230), (3692, 8510), (3848, 8165), (4255, 7384), (4615, 6808), (4810, 6532), (5254, 5980)]