77806480

素因数分解:

$2^4\times 5^1\times {\mathrm{972581}}^1$

素因数の和:972594

約数の個数: 20

約数和(自身を含む): 180900252

約数和(自身を除く): 103093772

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 972581, 1945162, 3890324, 4862905, 7780648, 9725810, 15561296, 19451620, 38903240, 77806480]

約数ペア:

[(1, 77806480), (2, 38903240), (4, 19451620), (5, 15561296), (8, 9725810), (10, 7780648), (16, 4862905), (20, 3890324), (40, 1945162), (80, 972581)]