28137725

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 44568576

約数和(自身を除く): 16430851

約数列:

[1, 5, 7, 11, 25, 35, 47, 55, 77, 175, 235, 275, 311, 329, 385, 517, 1175, 1555, 1645, 1925, 2177, 2585, 3421, 3619, 7775, 8225, 10885, 12925, 14617, 17105, 18095, 23947, 54425, 73085, 85525, 90475, 102319, 119735, 160787, 365425, 511595, 598675, 803935, 1125509, 2557975, 4019675, 5627545, 28137725]

約数ペア:

[(1, 28137725), (5, 5627545), (7, 4019675), (11, 2557975), (25, 1125509), (35, 803935), (47, 598675), (55, 511595), (77, 365425), (175, 160787), (235, 119735), (275, 102319), (311, 90475), (329, 85525), (385, 73085), (517, 54425), (1175, 23947), (1555, 18095), (1645, 17105), (1925, 14617), (2177, 12925), (2585, 10885), (3421, 8225), (3619, 7775)]