20257780

素因数分解:

$2^2\times 5^1\times {\mathrm{683}}^1\times {\mathrm{1483}}^1$

素因数の和:2175

約数の個数: 24

約数和(自身を含む): 42632352

約数和(自身を除く): 22374572

約数列:

[1, 2, 4, 5, 10, 20, 683, 1366, 1483, 2732, 2966, 3415, 5932, 6830, 7415, 13660, 14830, 29660, 1012889, 2025778, 4051556, 5064445, 10128890, 20257780]

約数ペア:

[(1, 20257780), (2, 10128890), (4, 5064445), (5, 4051556), (10, 2025778), (20, 1012889), (683, 29660), (1366, 14830), (1483, 13660), (2732, 7415), (2966, 6830), (3415, 5932)]