21059540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33967}}^1$

素因数の和:34007

約数の個数: 24

約数和(自身を含む): 45652992

約数和(自身を除く): 24593452

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33967, 67934, 135868, 169835, 339670, 679340, 1052977, 2105954, 4211908, 5264885, 10529770, 21059540]

約数ペア:

[(1, 21059540), (2, 10529770), (4, 5264885), (5, 4211908), (10, 2105954), (20, 1052977), (31, 679340), (62, 339670), (124, 169835), (155, 135868), (310, 67934), (620, 33967)]