21293945

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{479}}^1\times {\mathrm{523}}^1$

素因数の和:1024

約数の個数: 16

約数和(自身を含む): 27164160

約数和(自身を除く): 5870215

約数列:

[1, 5, 17, 85, 479, 523, 2395, 2615, 8143, 8891, 40715, 44455, 250517, 1252585, 4258789, 21293945]

約数ペア:

[(1, 21293945), (5, 4258789), (17, 1252585), (85, 250517), (479, 44455), (523, 40715), (2395, 8891), (2615, 8143)]