31580315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 10876645

約数列:

[1, 5, 13, 53, 65, 89, 103, 265, 445, 515, 689, 1157, 1339, 3445, 4717, 5459, 5785, 6695, 9167, 23585, 27295, 45835, 61321, 70967, 119171, 306605, 354835, 485851, 595855, 2429255, 6316063, 31580315]

約数ペア:

[(1, 31580315), (5, 6316063), (13, 2429255), (53, 595855), (65, 485851), (89, 354835), (103, 306605), (265, 119171), (445, 70967), (515, 61321), (689, 45835), (1157, 27295), (1339, 23585), (3445, 9167), (4717, 6695), (5459, 5785)]