20818660

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1823}}^1$

素因数の和:2403

約数の個数: 24

約数和(自身を含む): 43819776

約数和(自身を除く): 23001116

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 1823, 2284, 2855, 3646, 5710, 7292, 9115, 11420, 18230, 36460, 1040933, 2081866, 4163732, 5204665, 10409330, 20818660]

約数ペア:

[(1, 20818660), (2, 10409330), (4, 5204665), (5, 4163732), (10, 2081866), (20, 1040933), (571, 36460), (1142, 18230), (1823, 11420), (2284, 9115), (2855, 7292), (3646, 5710)]