18671175

素因数分解:

$3^3\times 5^2\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:357

約数の個数: 48

約数和(自身を含む): 34720000

約数和(自身を除く): 16048825

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 139, 199, 225, 417, 597, 675, 695, 995, 1251, 1791, 2085, 2985, 3475, 3753, 4975, 5373, 6255, 8955, 10425, 14925, 18765, 26865, 27661, 31275, 44775, 82983, 93825, 134325, 138305, 248949, 414915, 691525, 746847, 1244745, 2074575, 3734235, 6223725, 18671175]

約数ペア:

[(1, 18671175), (3, 6223725), (5, 3734235), (9, 2074575), (15, 1244745), (25, 746847), (27, 691525), (45, 414915), (75, 248949), (135, 138305), (139, 134325), (199, 93825), (225, 82983), (417, 44775), (597, 31275), (675, 27661), (695, 26865), (995, 18765), (1251, 14925), (1791, 10425), (2085, 8955), (2985, 6255), (3475, 5373), (3753, 4975)]