20698515

素因数分解:

$3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1451}}^1$

素因数の和:1779

約数の個数: 24

約数和(自身を含む): 36015408

約数和(自身を除く): 15316893

約数列:

[1, 3, 5, 9, 15, 45, 317, 951, 1451, 1585, 2853, 4353, 4755, 7255, 13059, 14265, 21765, 65295, 459967, 1379901, 2299835, 4139703, 6899505, 20698515]

約数ペア:

[(1, 20698515), (3, 6899505), (5, 4139703), (9, 2299835), (15, 1379901), (45, 459967), (317, 65295), (951, 21765), (1451, 14265), (1585, 13059), (2853, 7255), (4353, 4755)]