21498820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153563}}^1$

素因数の和:153579

約数の個数: 24

約数和(自身を含む): 51597504

約数和(自身を除く): 30098684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153563, 307126, 614252, 767815, 1074941, 1535630, 2149882, 3071260, 4299764, 5374705, 10749410, 21498820]

約数ペア:

[(1, 21498820), (2, 10749410), (4, 5374705), (5, 4299764), (7, 3071260), (10, 2149882), (14, 1535630), (20, 1074941), (28, 767815), (35, 614252), (70, 307126), (140, 153563)]