20895880

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1669}}^1$

素因数の和:1993

約数の個数: 32

約数和(自身を含む): 47194200

約数和(自身を除く): 26298320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 1669, 2504, 3130, 3338, 6260, 6676, 8345, 12520, 13352, 16690, 33380, 66760, 522397, 1044794, 2089588, 2611985, 4179176, 5223970, 10447940, 20895880]

約数ペア:

[(1, 20895880), (2, 10447940), (4, 5223970), (5, 4179176), (8, 2611985), (10, 2089588), (20, 1044794), (40, 522397), (313, 66760), (626, 33380), (1252, 16690), (1565, 13352), (1669, 12520), (2504, 8345), (3130, 6676), (3338, 6260)]