16405945

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{419}}^1$

素因数の和:656

約数の個数: 16

約数和(自身を含む): 20321280

約数和(自身を除く): 3915335

約数列:

[1, 5, 41, 191, 205, 419, 955, 2095, 7831, 17179, 39155, 80029, 85895, 400145, 3281189, 16405945]

約数ペア:

[(1, 16405945), (5, 3281189), (41, 400145), (191, 85895), (205, 80029), (419, 39155), (955, 17179), (2095, 7831)]