21493220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153523}}^1$

素因数の和:153539

約数の個数: 24

約数和(自身を含む): 51584064

約数和(自身を除く): 30090844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153523, 307046, 614092, 767615, 1074661, 1535230, 2149322, 3070460, 4298644, 5373305, 10746610, 21493220]

約数ペア:

[(1, 21493220), (2, 10746610), (4, 5373305), (5, 4298644), (7, 3070460), (10, 2149322), (14, 1535230), (20, 1074661), (28, 767615), (35, 614092), (70, 307046), (140, 153523)]