28320880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1$

素因数の和:614

約数の個数: 80

約数和(自身を含む): 76137984

約数和(自身を除く): 47817104

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 103, 112, 140, 206, 280, 412, 491, 515, 560, 721, 824, 982, 1030, 1442, 1648, 1964, 2060, 2455, 2884, 3437, 3605, 3928, 4120, 4910, 5768, 6874, 7210, 7856, 8240, 9820, 11536, 13748, 14420, 17185, 19640, 27496, 28840, 34370, 39280, 50573, 54992, 57680, 68740, 101146, 137480, 202292, 252865, 274960, 354011, 404584, 505730, 708022, 809168, 1011460, 1416044, 1770055, 2022920, 2832088, 3540110, 4045840, 5664176, 7080220, 14160440, 28320880]

約数ペア:

[(1, 28320880), (2, 14160440), (4, 7080220), (5, 5664176), (7, 4045840), (8, 3540110), (10, 2832088), (14, 2022920), (16, 1770055), (20, 1416044), (28, 1011460), (35, 809168), (40, 708022), (56, 505730), (70, 404584), (80, 354011), (103, 274960), (112, 252865), (140, 202292), (206, 137480), (280, 101146), (412, 68740), (491, 57680), (515, 54992), (560, 50573), (721, 39280), (824, 34370), (982, 28840), (1030, 27496), (1442, 19640), (1648, 17185), (1964, 14420), (2060, 13748), (2455, 11536), (2884, 9820), (3437, 8240), (3605, 7856), (3928, 7210), (4120, 6874), (4910, 5768)]