21147980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151057}}^1$

素因数の和:151073

約数の個数: 24

約数和(自身を含む): 50755488

約数和(自身を除く): 29607508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151057, 302114, 604228, 755285, 1057399, 1510570, 2114798, 3021140, 4229596, 5286995, 10573990, 21147980]

約数ペア:

[(1, 21147980), (2, 10573990), (4, 5286995), (5, 4229596), (7, 3021140), (10, 2114798), (14, 1510570), (20, 1057399), (28, 755285), (35, 604228), (70, 302114), (140, 151057)]