20088920

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1867}}^1$

素因数の和:2147

約数の個数: 32

約数和(自身を含む): 45392400

約数和(自身を除く): 25303480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 1867, 2152, 2690, 3734, 5380, 7468, 9335, 10760, 14936, 18670, 37340, 74680, 502223, 1004446, 2008892, 2511115, 4017784, 5022230, 10044460, 20088920]

約数ペア:

[(1, 20088920), (2, 10044460), (4, 5022230), (5, 4017784), (8, 2511115), (10, 2008892), (20, 1004446), (40, 502223), (269, 74680), (538, 37340), (1076, 18670), (1345, 14936), (1867, 10760), (2152, 9335), (2690, 7468), (3734, 5380)]