7998280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4877}}^1$

素因数の和:4929

約数の個数: 32

約数和(自身を含む): 18438840

約数和(自身を除く): 10440560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 4877, 9754, 19508, 24385, 39016, 48770, 97540, 195080, 199957, 399914, 799828, 999785, 1599656, 1999570, 3999140, 7998280]

約数ペア:

[(1, 7998280), (2, 3999140), (4, 1999570), (5, 1599656), (8, 999785), (10, 799828), (20, 399914), (40, 199957), (41, 195080), (82, 97540), (164, 48770), (205, 39016), (328, 24385), (410, 19508), (820, 9754), (1640, 4877)]