28486521

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{3253}}^1$

素因数の和:3405

約数の個数: 24

約数和(自身を含む): 47378240

約数和(自身を除く): 18891719

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2919, 3253, 8757, 9759, 22771, 29277, 68313, 204939, 452167, 1356501, 3165169, 4069503, 9495507, 28486521]

約数ペア:

[(1, 28486521), (3, 9495507), (7, 4069503), (9, 3165169), (21, 1356501), (63, 452167), (139, 204939), (417, 68313), (973, 29277), (1251, 22771), (2919, 9759), (3253, 8757)]