28365520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20857}}^1$

素因数の和:20887

約数の個数: 40

約数和(自身を含む): 69832584

約数和(自身を除く): 41467064

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 20857, 41714, 83428, 104285, 166856, 208570, 333712, 354569, 417140, 709138, 834280, 1418276, 1668560, 1772845, 2836552, 3545690, 5673104, 7091380, 14182760, 28365520]

約数ペア:

[(1, 28365520), (2, 14182760), (4, 7091380), (5, 5673104), (8, 3545690), (10, 2836552), (16, 1772845), (17, 1668560), (20, 1418276), (34, 834280), (40, 709138), (68, 417140), (80, 354569), (85, 333712), (136, 208570), (170, 166856), (272, 104285), (340, 83428), (680, 41714), (1360, 20857)]