21021490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{42901}}^1$

素因数の和:42922

約数の個数: 24

約数和(自身を含む): 44017452

約数和(自身を除く): 22995962

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 42901, 85802, 214505, 300307, 429010, 600614, 1501535, 2102149, 3003070, 4204298, 10510745, 21021490]

約数ペア:

[(1, 21021490), (2, 10510745), (5, 4204298), (7, 3003070), (10, 2102149), (14, 1501535), (35, 600614), (49, 429010), (70, 300307), (98, 214505), (245, 85802), (490, 42901)]