31188820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{863}}^1$

素因数の和:1024

約数の個数: 48

約数和(自身を含む): 71124480

約数和(自身を除く): 39935660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 556, 695, 863, 1390, 1726, 1807, 2780, 3452, 3614, 4315, 7228, 8630, 9035, 11219, 17260, 18070, 22438, 36140, 44876, 56095, 112190, 119957, 224380, 239914, 479828, 599785, 1199570, 1559441, 2399140, 3118882, 6237764, 7797205, 15594410, 31188820]

約数ペア:

[(1, 31188820), (2, 15594410), (4, 7797205), (5, 6237764), (10, 3118882), (13, 2399140), (20, 1559441), (26, 1199570), (52, 599785), (65, 479828), (130, 239914), (139, 224380), (260, 119957), (278, 112190), (556, 56095), (695, 44876), (863, 36140), (1390, 22438), (1726, 18070), (1807, 17260), (2780, 11219), (3452, 9035), (3614, 8630), (4315, 7228)]