1297651640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{791251}}^1$

素因数の和:791303

約数の個数: 32

約数和(自身を含む): 2990932560

約数和(自身を除く): 1693280920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 791251, 1582502, 3165004, 3956255, 6330008, 7912510, 15825020, 31650040, 32441291, 64882582, 129765164, 162206455, 259530328, 324412910, 648825820, 1297651640]

約数ペア:

[(1, 1297651640), (2, 648825820), (4, 324412910), (5, 259530328), (8, 162206455), (10, 129765164), (20, 64882582), (40, 32441291), (41, 31650040), (82, 15825020), (164, 7912510), (205, 6330008), (328, 3956255), (410, 3165004), (820, 1582502), (1640, 791251)]