7891220

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{691}}^1$

素因数の和:1271

約数の個数: 24

約数和(自身を含む): 16624608

約数和(自身を除く): 8733388

約数列:

[1, 2, 4, 5, 10, 20, 571, 691, 1142, 1382, 2284, 2764, 2855, 3455, 5710, 6910, 11420, 13820, 394561, 789122, 1578244, 1972805, 3945610, 7891220]

約数ペア:

[(1, 7891220), (2, 3945610), (4, 1972805), (5, 1578244), (10, 789122), (20, 394561), (571, 13820), (691, 11420), (1142, 6910), (1382, 5710), (2284, 3455), (2764, 2855)]