640159975

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{5987}}^1$

素因数の和:6064

約数の個数: 48

約数和(自身を含む): 997936128

約数和(自身を除く): 357776153

約数列:

[1, 5, 7, 13, 25, 35, 47, 65, 91, 175, 235, 325, 329, 455, 611, 1175, 1645, 2275, 3055, 4277, 5987, 8225, 15275, 21385, 29935, 41909, 77831, 106925, 149675, 209545, 281389, 389155, 544817, 1047725, 1406945, 1945775, 1969723, 2724085, 3658057, 7034725, 9848615, 13620425, 18290285, 25606399, 49243075, 91451425, 128031995, 640159975]

約数ペア:

[(1, 640159975), (5, 128031995), (7, 91451425), (13, 49243075), (25, 25606399), (35, 18290285), (47, 13620425), (65, 9848615), (91, 7034725), (175, 3658057), (235, 2724085), (325, 1969723), (329, 1945775), (455, 1406945), (611, 1047725), (1175, 544817), (1645, 389155), (2275, 281389), (3055, 209545), (4277, 149675), (5987, 106925), (8225, 77831), (15275, 41909), (21385, 29935)]