320151640

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{16301}}^1$

素因数の和:16803

約数の個数: 32

約数和(自身を含む): 721852560

約数和(自身を除く): 401700920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 9820, 16301, 19640, 32602, 65204, 81505, 130408, 163010, 326020, 652040, 8003791, 16007582, 32015164, 40018955, 64030328, 80037910, 160075820, 320151640]

約数ペア:

[(1, 320151640), (2, 160075820), (4, 80037910), (5, 64030328), (8, 40018955), (10, 32015164), (20, 16007582), (40, 8003791), (491, 652040), (982, 326020), (1964, 163010), (2455, 130408), (3928, 81505), (4910, 65204), (9820, 32602), (16301, 19640)]