13129640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5381}}^1$

素因数の和:5453

約数の個数: 32

約数和(自身を含む): 30031560

約数和(自身を除く): 16901920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 5381, 10762, 21524, 26905, 43048, 53810, 107620, 215240, 328241, 656482, 1312964, 1641205, 2625928, 3282410, 6564820, 13129640]

約数ペア:

[(1, 13129640), (2, 6564820), (4, 3282410), (5, 2625928), (8, 1641205), (10, 1312964), (20, 656482), (40, 328241), (61, 215240), (122, 107620), (244, 53810), (305, 43048), (488, 26905), (610, 21524), (1220, 10762), (2440, 5381)]