21225265

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{3727}}^1$

素因数の和:3816

約数の個数: 16

約数和(自身を含む): 27378432

約数和(自身を除く): 6153167

約数列:

[1, 5, 17, 67, 85, 335, 1139, 3727, 5695, 18635, 63359, 249709, 316795, 1248545, 4245053, 21225265]

約数ペア:

[(1, 21225265), (5, 4245053), (17, 1248545), (67, 316795), (85, 249709), (335, 63359), (1139, 18635), (3727, 5695)]