21919820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84307}}^1$

素因数の和:84329

約数の個数: 24

約数和(自身を含む): 49573104

約数和(自身を除く): 27653284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84307, 168614, 337228, 421535, 843070, 1095991, 1686140, 2191982, 4383964, 5479955, 10959910, 21919820]

約数ペア:

[(1, 21919820), (2, 10959910), (4, 5479955), (5, 4383964), (10, 2191982), (13, 1686140), (20, 1095991), (26, 843070), (52, 421535), (65, 337228), (130, 168614), (260, 84307)]