31661240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{60887}}^1$

素因数の和:60911

約数の個数: 32

約数和(自身を含む): 76718880

約数和(自身を除く): 45057640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 60887, 121774, 243548, 304435, 487096, 608870, 791531, 1217740, 1583062, 2435480, 3166124, 3957655, 6332248, 7915310, 15830620, 31661240]

約数ペア:

[(1, 31661240), (2, 15830620), (4, 7915310), (5, 6332248), (8, 3957655), (10, 3166124), (13, 2435480), (20, 1583062), (26, 1217740), (40, 791531), (52, 608870), (65, 487096), (104, 304435), (130, 243548), (260, 121774), (520, 60887)]