31420520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{14821}}^1$

素因数の和:14885

約数の個数: 32

約数和(自身を含む): 72034920

約数和(自身を除く): 40614400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 14821, 29642, 59284, 74105, 118568, 148210, 296420, 592840, 785513, 1571026, 3142052, 3927565, 6284104, 7855130, 15710260, 31420520]

約数ペア:

[(1, 31420520), (2, 15710260), (4, 7855130), (5, 6284104), (8, 3927565), (10, 3142052), (20, 1571026), (40, 785513), (53, 592840), (106, 296420), (212, 148210), (265, 118568), (424, 74105), (530, 59284), (1060, 29642), (2120, 14821)]