18124420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31249}}^1$

素因数の和:31287

約数の個数: 24

約数和(自身を含む): 39375000

約数和(自身を除く): 21250580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 31249, 62498, 124996, 156245, 312490, 624980, 906221, 1812442, 3624884, 4531105, 9062210, 18124420]

約数ペア:

[(1, 18124420), (2, 9062210), (4, 4531105), (5, 3624884), (10, 1812442), (20, 906221), (29, 624980), (58, 312490), (116, 156245), (145, 124996), (290, 62498), (580, 31249)]