21452015

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{479}}^1$

素因数の和:563

約数の個数: 24

約数和(自身を含む): 28460160

約数和(自身を除く): 7008145

約数列:

[1, 5, 13, 53, 65, 169, 265, 479, 689, 845, 2395, 3445, 6227, 8957, 25387, 31135, 44785, 80951, 126935, 330031, 404755, 1650155, 4290403, 21452015]

約数ペア:

[(1, 21452015), (5, 4290403), (13, 1650155), (53, 404755), (65, 330031), (169, 126935), (265, 80951), (479, 44785), (689, 31135), (845, 25387), (2395, 8957), (3445, 6227)]