21481180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153437}}^1$

素因数の和:153453

約数の個数: 24

約数和(自身を含む): 51555168

約数和(自身を除く): 30073988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153437, 306874, 613748, 767185, 1074059, 1534370, 2148118, 3068740, 4296236, 5370295, 10740590, 21481180]

約数ペア:

[(1, 21481180), (2, 10740590), (4, 5370295), (5, 4296236), (7, 3068740), (10, 2148118), (14, 1534370), (20, 1074059), (28, 767185), (35, 613748), (70, 306874), (140, 153437)]