12858920

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{571}}^1$

素因数の和:1145

約数の個数: 32

約数和(自身を含む): 29034720

約数和(自身を除く): 16175800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 571, 1126, 1142, 2252, 2284, 2815, 2855, 4504, 4568, 5630, 5710, 11260, 11420, 22520, 22840, 321473, 642946, 1285892, 1607365, 2571784, 3214730, 6429460, 12858920]

約数ペア:

[(1, 12858920), (2, 6429460), (4, 3214730), (5, 2571784), (8, 1607365), (10, 1285892), (20, 642946), (40, 321473), (563, 22840), (571, 22520), (1126, 11420), (1142, 11260), (2252, 5710), (2284, 5630), (2815, 4568), (2855, 4504)]