8165840

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{991}}^1$

素因数の和:1107

約数の個数: 40

約数和(自身を含む): 19189248

約数和(自身を除く): 11023408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 991, 1030, 1648, 1982, 2060, 3964, 4120, 4955, 7928, 8240, 9910, 15856, 19820, 39640, 79280, 102073, 204146, 408292, 510365, 816584, 1020730, 1633168, 2041460, 4082920, 8165840]

約数ペア:

[(1, 8165840), (2, 4082920), (4, 2041460), (5, 1633168), (8, 1020730), (10, 816584), (16, 510365), (20, 408292), (40, 204146), (80, 102073), (103, 79280), (206, 39640), (412, 19820), (515, 15856), (824, 9910), (991, 8240), (1030, 7928), (1648, 4955), (1982, 4120), (2060, 3964)]