20100220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{143573}}^1$

素因数の和:143589

約数の個数: 24

約数和(自身を含む): 48240864

約数和(自身を除く): 28140644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 143573, 287146, 574292, 717865, 1005011, 1435730, 2010022, 2871460, 4020044, 5025055, 10050110, 20100220]

約数ペア:

[(1, 20100220), (2, 10050110), (4, 5025055), (5, 4020044), (7, 2871460), (10, 2010022), (14, 1435730), (20, 1005011), (28, 717865), (35, 574292), (70, 287146), (140, 143573)]