21379245

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34763}}^1$

素因数の和:34812

約数の個数: 16

約数和(自身を含む): 35042112

約数和(自身を除く): 13662867

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 34763, 104289, 173815, 521445, 1425283, 4275849, 7126415, 21379245]

約数ペア:

[(1, 21379245), (3, 7126415), (5, 4275849), (15, 1425283), (41, 521445), (123, 173815), (205, 104289), (615, 34763)]