5281840

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{641}}^1$

素因数の和:757

約数の個数: 40

約数和(自身を含む): 12418848

約数和(自身を除く): 7137008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 641, 824, 1030, 1282, 1648, 2060, 2564, 3205, 4120, 5128, 6410, 8240, 10256, 12820, 25640, 51280, 66023, 132046, 264092, 330115, 528184, 660230, 1056368, 1320460, 2640920, 5281840]

約数ペア:

[(1, 5281840), (2, 2640920), (4, 1320460), (5, 1056368), (8, 660230), (10, 528184), (16, 330115), (20, 264092), (40, 132046), (80, 66023), (103, 51280), (206, 25640), (412, 12820), (515, 10256), (641, 8240), (824, 6410), (1030, 5128), (1282, 4120), (1648, 3205), (2060, 2564)]