31309131

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{599}}^1$

素因数の和:759

約数の個数: 32

約数和(自身を含む): 50688000

約数和(自身を除く): 19378869

約数列:

[1, 3, 7, 19, 21, 57, 131, 133, 393, 399, 599, 917, 1797, 2489, 2751, 4193, 7467, 11381, 12579, 17423, 34143, 52269, 78469, 79667, 235407, 239001, 549283, 1490911, 1647849, 4472733, 10436377, 31309131]

約数ペア:

[(1, 31309131), (3, 10436377), (7, 4472733), (19, 1647849), (21, 1490911), (57, 549283), (131, 239001), (133, 235407), (393, 79667), (399, 78469), (599, 52269), (917, 34143), (1797, 17423), (2489, 12579), (2751, 11381), (4193, 7467)]