20691125

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 33965568

約数和(自身を除く): 13274443

約数列:

[1, 5, 7, 13, 17, 25, 35, 65, 85, 91, 107, 119, 125, 175, 221, 325, 425, 455, 535, 595, 749, 875, 1105, 1391, 1547, 1625, 1819, 2125, 2275, 2675, 2975, 3745, 5525, 6955, 7735, 9095, 9737, 11375, 12733, 13375, 14875, 18725, 23647, 27625, 34775, 38675, 45475, 48685, 63665, 93625, 118235, 165529, 173875, 193375, 227375, 243425, 318325, 591175, 827645, 1217125, 1591625, 2955875, 4138225, 20691125]

約数ペア:

[(1, 20691125), (5, 4138225), (7, 2955875), (13, 1591625), (17, 1217125), (25, 827645), (35, 591175), (65, 318325), (85, 243425), (91, 227375), (107, 193375), (119, 173875), (125, 165529), (175, 118235), (221, 93625), (325, 63665), (425, 48685), (455, 45475), (535, 38675), (595, 34775), (749, 27625), (875, 23647), (1105, 18725), (1391, 14875), (1547, 13375), (1625, 12733), (1819, 11375), (2125, 9737), (2275, 9095), (2675, 7735), (2975, 6955), (3745, 5525)]