21427810

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1997}}^1$

素因数の和:2070

約数の個数: 32

約数和(自身を含む): 40998960

約数和(自身を除く): 19571150

約数列:

[1, 2, 5, 10, 29, 37, 58, 74, 145, 185, 290, 370, 1073, 1997, 2146, 3994, 5365, 9985, 10730, 19970, 57913, 73889, 115826, 147778, 289565, 369445, 579130, 738890, 2142781, 4285562, 10713905, 21427810]

約数ペア:

[(1, 21427810), (2, 10713905), (5, 4285562), (10, 2142781), (29, 738890), (37, 579130), (58, 369445), (74, 289565), (145, 147778), (185, 115826), (290, 73889), (370, 57913), (1073, 19970), (1997, 10730), (2146, 9985), (3994, 5365)]