21360464

素因数分解:

$2^4\times {\mathrm{491}}^1\times {\mathrm{2719}}^1$

素因数の和:3218

約数の個数: 20

約数和(自身を含む): 41485440

約数和(自身を除く): 20124976

約数列:

[1, 2, 4, 8, 16, 491, 982, 1964, 2719, 3928, 5438, 7856, 10876, 21752, 43504, 1335029, 2670058, 5340116, 10680232, 21360464]

約数ペア:

[(1, 21360464), (2, 10680232), (4, 5340116), (8, 2670058), (16, 1335029), (491, 43504), (982, 21752), (1964, 10876), (2719, 7856), (3928, 5438)]