21915724

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{2711}}^1$

素因数の和:2805

約数の個数: 24

約数和(自身を含む): 40094208

約数和(自身を除く): 18178484

約数列:

[1, 2, 4, 43, 47, 86, 94, 172, 188, 2021, 2711, 4042, 5422, 8084, 10844, 116573, 127417, 233146, 254834, 466292, 509668, 5478931, 10957862, 21915724]

約数ペア:

[(1, 21915724), (2, 10957862), (4, 5478931), (43, 509668), (47, 466292), (86, 254834), (94, 233146), (172, 127417), (188, 116573), (2021, 10844), (2711, 8084), (4042, 5422)]