208771425

素因数分解:

$3^4\times 5^2\times {\mathrm{131}}^1\times {\mathrm{787}}^1$

素因数の和:940

約数の個数: 60

約数和(自身を含む): 390164016

約数和(自身を除く): 181392591

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 131, 135, 225, 393, 405, 655, 675, 787, 1179, 1965, 2025, 2361, 3275, 3537, 3935, 5895, 7083, 9825, 10611, 11805, 17685, 19675, 21249, 29475, 35415, 53055, 59025, 63747, 88425, 103097, 106245, 177075, 265275, 309291, 318735, 515485, 531225, 927873, 1546455, 1593675, 2577425, 2783619, 4639365, 7732275, 8350857, 13918095, 23196825, 41754285, 69590475, 208771425]

約数ペア:

[(1, 208771425), (3, 69590475), (5, 41754285), (9, 23196825), (15, 13918095), (25, 8350857), (27, 7732275), (45, 4639365), (75, 2783619), (81, 2577425), (131, 1593675), (135, 1546455), (225, 927873), (393, 531225), (405, 515485), (655, 318735), (675, 309291), (787, 265275), (1179, 177075), (1965, 106245), (2025, 103097), (2361, 88425), (3275, 63747), (3537, 59025), (3935, 53055), (5895, 35415), (7083, 29475), (9825, 21249), (10611, 19675), (11805, 17685)]