20845840

素因数分解:

$2^4\times 5^1\times {\mathrm{260573}}^1$

素因数の和:260586

約数の個数: 20

約数和(自身を含む): 48466764

約数和(自身を除く): 27620924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260573, 521146, 1042292, 1302865, 2084584, 2605730, 4169168, 5211460, 10422920, 20845840]

約数ペア:

[(1, 20845840), (2, 10422920), (4, 5211460), (5, 4169168), (8, 2605730), (10, 2084584), (16, 1302865), (20, 1042292), (40, 521146), (80, 260573)]