21857356

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{359}}^1\times {\mathrm{491}}^1$

素因数の和:885

約数の個数: 24

約数和(自身を含む): 39674880

約数和(自身を除く): 17817524

約数列:

[1, 2, 4, 31, 62, 124, 359, 491, 718, 982, 1436, 1964, 11129, 15221, 22258, 30442, 44516, 60884, 176269, 352538, 705076, 5464339, 10928678, 21857356]

約数ペア:

[(1, 21857356), (2, 10928678), (4, 5464339), (31, 705076), (62, 352538), (124, 176269), (359, 60884), (491, 44516), (718, 30442), (982, 22258), (1436, 15221), (1964, 11129)]