4045840

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1$

素因数の和:607

約数の個数: 40

約数和(自身を含む): 9517248

約数和(自身を除く): 5471408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 491, 515, 824, 982, 1030, 1648, 1964, 2060, 2455, 3928, 4120, 4910, 7856, 8240, 9820, 19640, 39280, 50573, 101146, 202292, 252865, 404584, 505730, 809168, 1011460, 2022920, 4045840]

約数ペア:

[(1, 4045840), (2, 2022920), (4, 1011460), (5, 809168), (8, 505730), (10, 404584), (16, 252865), (20, 202292), (40, 101146), (80, 50573), (103, 39280), (206, 19640), (412, 9820), (491, 8240), (515, 7856), (824, 4910), (982, 4120), (1030, 3928), (1648, 2455), (1964, 2060)]