31520840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{60617}}^1$

素因数の和:60641

約数の個数: 32

約数和(自身を含む): 76378680

約数和(自身を除く): 44857840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 60617, 121234, 242468, 303085, 484936, 606170, 788021, 1212340, 1576042, 2424680, 3152084, 3940105, 6304168, 7880210, 15760420, 31520840]

約数ペア:

[(1, 31520840), (2, 15760420), (4, 7880210), (5, 6304168), (8, 3940105), (10, 3152084), (13, 2424680), (20, 1576042), (26, 1212340), (40, 788021), (52, 606170), (65, 484936), (104, 303085), (130, 242468), (260, 121234), (520, 60617)]