81691360

素因数分解:

$2^5\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4957}}^1$

素因数の和:5075

約数の個数: 48

約数和(自身を含む): 194908896

約数和(自身を除く): 113217536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 103, 160, 206, 412, 515, 824, 1030, 1648, 2060, 3296, 4120, 4957, 8240, 9914, 16480, 19828, 24785, 39656, 49570, 79312, 99140, 158624, 198280, 396560, 510571, 793120, 1021142, 2042284, 2552855, 4084568, 5105710, 8169136, 10211420, 16338272, 20422840, 40845680, 81691360]

約数ペア:

[(1, 81691360), (2, 40845680), (4, 20422840), (5, 16338272), (8, 10211420), (10, 8169136), (16, 5105710), (20, 4084568), (32, 2552855), (40, 2042284), (80, 1021142), (103, 793120), (160, 510571), (206, 396560), (412, 198280), (515, 158624), (824, 99140), (1030, 79312), (1648, 49570), (2060, 39656), (3296, 24785), (4120, 19828), (4957, 16480), (8240, 9914)]