21220568

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{139609}}^1$

素因数の和:139634

約数の個数: 16

約数和(自身を含む): 41883000

約数和(自身を除く): 20662432

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 139609, 279218, 558436, 1116872, 2652571, 5305142, 10610284, 21220568]

約数ペア:

[(1, 21220568), (2, 10610284), (4, 5305142), (8, 2652571), (19, 1116872), (38, 558436), (76, 279218), (152, 139609)]