20973020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17191}}^1$

素因数の和:17261

約数の個数: 24

約数和(自身を含む): 44767968

約数和(自身を除く): 23794948

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17191, 34382, 68764, 85955, 171910, 343820, 1048651, 2097302, 4194604, 5243255, 10486510, 20973020]

約数ペア:

[(1, 20973020), (2, 10486510), (4, 5243255), (5, 4194604), (10, 2097302), (20, 1048651), (61, 343820), (122, 171910), (244, 85955), (305, 68764), (610, 34382), (1220, 17191)]