21862480

素因数分解:

$2^4\times 5^1\times {\mathrm{273281}}^1$

素因数の和:273294

約数の個数: 20

約数和(自身を含む): 50830452

約数和(自身を除く): 28967972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273281, 546562, 1093124, 1366405, 2186248, 2732810, 4372496, 5465620, 10931240, 21862480]

約数ペア:

[(1, 21862480), (2, 10931240), (4, 5465620), (5, 4372496), (8, 2732810), (10, 2186248), (16, 1366405), (20, 1093124), (40, 546562), (80, 273281)]