28217885

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{787}}^1$

素因数の和:964

約数の個数: 16

約数和(自身を含む): 34722432

約数和(自身を除く): 6504547

約数列:

[1, 5, 71, 101, 355, 505, 787, 3935, 7171, 35855, 55877, 79487, 279385, 397435, 5643577, 28217885]

約数ペア:

[(1, 28217885), (5, 5643577), (71, 397435), (101, 279385), (355, 79487), (505, 55877), (787, 35855), (3935, 7171)]