81915730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{4229}}^1$

素因数の和:4398

約数の個数: 32

約数和(自身を含む): 159894000

約数和(自身を除く): 77978270

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 149, 298, 745, 1490, 1937, 3874, 4229, 8458, 9685, 19370, 21145, 42290, 54977, 109954, 274885, 549770, 630121, 1260242, 3150605, 6301210, 8191573, 16383146, 40957865, 81915730]

約数ペア:

[(1, 81915730), (2, 40957865), (5, 16383146), (10, 8191573), (13, 6301210), (26, 3150605), (65, 1260242), (130, 630121), (149, 549770), (298, 274885), (745, 109954), (1490, 54977), (1937, 42290), (3874, 21145), (4229, 19370), (8458, 9685)]