21305035

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{1009}}^1$

素因数の和:1158

約数の個数: 16

約数和(自身を含む): 26470080

約数和(自身を除く): 5165045

約数列:

[1, 5, 41, 103, 205, 515, 1009, 4223, 5045, 21115, 41369, 103927, 206845, 519635, 4261007, 21305035]

約数ペア:

[(1, 21305035), (5, 4261007), (41, 519635), (103, 206845), (205, 103927), (515, 41369), (1009, 21115), (4223, 5045)]