28991165

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{367}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 41616384

約数和(自身を除く): 12625219

約数列:

[1, 5, 7, 35, 37, 61, 185, 259, 305, 367, 427, 1295, 1835, 2135, 2257, 2569, 11285, 12845, 13579, 15799, 22387, 67895, 78995, 95053, 111935, 156709, 475265, 783545, 828319, 4141595, 5798233, 28991165]

約数ペア:

[(1, 28991165), (5, 5798233), (7, 4141595), (35, 828319), (37, 783545), (61, 475265), (185, 156709), (259, 111935), (305, 95053), (367, 78995), (427, 67895), (1295, 22387), (1835, 15799), (2135, 13579), (2257, 12845), (2569, 11285)]