80181620

素因数分解:

$2^2\times 5^1\times {\mathrm{1579}}^1\times {\mathrm{2539}}^1$

素因数の和:4127

約数の個数: 24

約数和(自身を含む): 168554400

約数和(自身を除く): 88372780

約数列:

[1, 2, 4, 5, 10, 20, 1579, 2539, 3158, 5078, 6316, 7895, 10156, 12695, 15790, 25390, 31580, 50780, 4009081, 8018162, 16036324, 20045405, 40090810, 80181620]

約数ペア:

[(1, 80181620), (2, 40090810), (4, 20045405), (5, 16036324), (10, 8018162), (20, 4009081), (1579, 50780), (2539, 31580), (3158, 25390), (5078, 15790), (6316, 12695), (7895, 10156)]