28782320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{499}}^1$

素因数の和:622

約数の個数: 80

約数和(自身を含む): 77376000

約数和(自身を除く): 48593680

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, 499, 515, 560, 721, 824, 998, 1030, 1442, 1648, 1996, 2060, 2495, 2884, 3493, 3605, 3992, 4120, 4990, 5768, 6986, 7210, 7984, 8240, 9980, 11536, 13972, 14420, 17465, 19960, 27944, 28840, 34930, 39920, 51397, 55888, 57680, 69860, 102794, 139720, 205588, 256985, 279440, 359779, 411176, 513970, 719558, 822352, 1027940, 1439116, 1798895, 2055880, 2878232, 3597790, 4111760, 5756464, 7195580, 14391160, 28782320]

約数ペア:

[(1, 28782320), (2, 14391160), (4, 7195580), (5, 5756464), (7, 4111760), (8, 3597790), (10, 2878232), (14, 2055880), (16, 1798895), (20, 1439116), (28, 1027940), (35, 822352), (40, 719558), (56, 513970), (70, 411176), (80, 359779), (103, 279440), (112, 256985), (140, 205588), (206, 139720), (280, 102794), (412, 69860), (499, 57680), (515, 55888), (560, 51397), (721, 39920), (824, 34930), (998, 28840), (1030, 27944), (1442, 19960), (1648, 17465), (1996, 14420), (2060, 13972), (2495, 11536), (2884, 9980), (3493, 8240), (3605, 7984), (3992, 7210), (4120, 6986), (4990, 5768)]