21521450

素因数分解:

$2^1\times 5^2\times {\mathrm{523}}^1\times {\mathrm{823}}^1$

素因数の和:1358

約数の個数: 24

約数和(自身を含む): 40155168

約数和(自身を除く): 18633718

約数列:

[1, 2, 5, 10, 25, 50, 523, 823, 1046, 1646, 2615, 4115, 5230, 8230, 13075, 20575, 26150, 41150, 430429, 860858, 2152145, 4304290, 10760725, 21521450]

約数ペア:

[(1, 21521450), (2, 10760725), (5, 4304290), (10, 2152145), (25, 860858), (50, 430429), (523, 41150), (823, 26150), (1046, 20575), (1646, 13075), (2615, 8230), (4115, 5230)]