2021197840

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{245291}}^1$

素因数の和:245407

約数の個数: 40

約数和(自身を含む): 4744928448

約数和(自身を除く): 2723730608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 4120, 8240, 245291, 490582, 981164, 1226455, 1962328, 2452910, 3924656, 4905820, 9811640, 19623280, 25264973, 50529946, 101059892, 126324865, 202119784, 252649730, 404239568, 505299460, 1010598920, 2021197840]

約数ペア:

[(1, 2021197840), (2, 1010598920), (4, 505299460), (5, 404239568), (8, 252649730), (10, 202119784), (16, 126324865), (20, 101059892), (40, 50529946), (80, 25264973), (103, 19623280), (206, 9811640), (412, 4905820), (515, 3924656), (824, 2452910), (1030, 1962328), (1648, 1226455), (2060, 981164), (4120, 490582), (8240, 245291)]