18690225

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 33265728

約数和(自身を除く): 14575503

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 107, 137, 255, 321, 411, 425, 535, 685, 1275, 1605, 1819, 2055, 2329, 2675, 3425, 5457, 6987, 8025, 9095, 10275, 11645, 14659, 27285, 34935, 43977, 45475, 58225, 73295, 136425, 174675, 219885, 249203, 366475, 747609, 1099425, 1246015, 3738045, 6230075, 18690225]

約数ペア:

[(1, 18690225), (3, 6230075), (5, 3738045), (15, 1246015), (17, 1099425), (25, 747609), (51, 366475), (75, 249203), (85, 219885), (107, 174675), (137, 136425), (255, 73295), (321, 58225), (411, 45475), (425, 43977), (535, 34935), (685, 27285), (1275, 14659), (1605, 11645), (1819, 10275), (2055, 9095), (2329, 8025), (2675, 6987), (3425, 5457)]