21990842

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{211}}^1$

素因数の和:326

約数の個数: 24

約数和(自身を含む): 35066496

約数和(自身を除く): 13075654

約数列:

[1, 2, 31, 41, 62, 82, 211, 422, 1271, 1681, 2542, 3362, 6541, 8651, 13082, 17302, 52111, 104222, 268181, 354691, 536362, 709382, 10995421, 21990842]

約数ペア:

[(1, 21990842), (2, 10995421), (31, 709382), (41, 536362), (62, 354691), (82, 268181), (211, 104222), (422, 52111), (1271, 17302), (1681, 13082), (2542, 8651), (3362, 6541)]