18918520

素因数分解:

$2^3\times 5^1\times {\mathrm{472963}}^1$

素因数の和:472974

約数の個数: 16

約数和(自身を含む): 42566760

約数和(自身を除く): 23648240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 472963, 945926, 1891852, 2364815, 3783704, 4729630, 9459260, 18918520]

約数ペア:

[(1, 18918520), (2, 9459260), (4, 4729630), (5, 3783704), (8, 2364815), (10, 1891852), (20, 945926), (40, 472963)]