21080570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{751}}^1$

素因数の和:1166

約数の個数: 32

約数和(自身を含む): 43531776

約数和(自身を除く): 22451206

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 401, 751, 802, 1502, 2005, 2807, 3755, 4010, 5257, 5614, 7510, 10514, 14035, 26285, 28070, 52570, 301151, 602302, 1505755, 2108057, 3011510, 4216114, 10540285, 21080570]

約数ペア:

[(1, 21080570), (2, 10540285), (5, 4216114), (7, 3011510), (10, 2108057), (14, 1505755), (35, 602302), (70, 301151), (401, 52570), (751, 28070), (802, 26285), (1502, 14035), (2005, 10514), (2807, 7510), (3755, 5614), (4010, 5257)]