21156956

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{5923}}^1$

素因数の和:5993

約数の個数: 24

約数和(自身を含む): 39809280

約数和(自身を除く): 18652324

約数列:

[1, 2, 4, 19, 38, 47, 76, 94, 188, 893, 1786, 3572, 5923, 11846, 23692, 112537, 225074, 278381, 450148, 556762, 1113524, 5289239, 10578478, 21156956]

約数ペア:

[(1, 21156956), (2, 10578478), (4, 5289239), (19, 1113524), (38, 556762), (47, 450148), (76, 278381), (94, 225074), (188, 112537), (893, 23692), (1786, 11846), (3572, 5923)]