21525340

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2711}}^1$

素因数の和:3117

約数の個数: 24

約数和(自身を含む): 45333792

約数和(自身を除く): 23808452

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2711, 3970, 5422, 7940, 10844, 13555, 27110, 54220, 1076267, 2152534, 4305068, 5381335, 10762670, 21525340]

約数ペア:

[(1, 21525340), (2, 10762670), (4, 5381335), (5, 4305068), (10, 2152534), (20, 1076267), (397, 54220), (794, 27110), (1588, 13555), (1985, 10844), (2711, 7940), (3970, 5422)]