7870220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6451}}^1$

素因数の和:6521

約数の個数: 24

約数和(自身を含む): 16801008

約数和(自身を除く): 8930788

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 6451, 12902, 25804, 32255, 64510, 129020, 393511, 787022, 1574044, 1967555, 3935110, 7870220]

約数ペア:

[(1, 7870220), (2, 3935110), (4, 1967555), (5, 1574044), (10, 787022), (20, 393511), (61, 129020), (122, 64510), (244, 32255), (305, 25804), (610, 12902), (1220, 6451)]