21492940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153521}}^1$

素因数の和:153537

約数の個数: 24

約数和(自身を含む): 51583392

約数和(自身を除く): 30090452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153521, 307042, 614084, 767605, 1074647, 1535210, 2149294, 3070420, 4298588, 5373235, 10746470, 21492940]

約数ペア:

[(1, 21492940), (2, 10746470), (4, 5373235), (5, 4298588), (7, 3070420), (10, 2149294), (14, 1535210), (20, 1074647), (28, 767605), (35, 614084), (70, 307042), (140, 153521)]