20762405

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{149}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 26811000

約数和(自身を除く): 6048595

約数列:

[1, 5, 29, 31, 145, 149, 155, 745, 899, 961, 4321, 4495, 4619, 4805, 21605, 23095, 27869, 133951, 139345, 143189, 669755, 715945, 4152481, 20762405]

約数ペア:

[(1, 20762405), (5, 4152481), (29, 715945), (31, 669755), (145, 143189), (149, 139345), (155, 133951), (745, 27869), (899, 23095), (961, 21605), (4321, 4805), (4495, 4619)]