18478125

素因数分解:

$3^4\times 5^5\times {\mathrm{73}}^1$

素因数の和:110

約数の個数: 60

約数和(自身を含む): 34974324

約数和(自身を除く): 16496199

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 73, 75, 81, 125, 135, 219, 225, 365, 375, 405, 625, 657, 675, 1095, 1125, 1825, 1875, 1971, 2025, 3125, 3285, 3375, 5475, 5625, 5913, 9125, 9375, 9855, 10125, 16425, 16875, 27375, 28125, 29565, 45625, 49275, 50625, 82125, 84375, 136875, 147825, 228125, 246375, 253125, 410625, 684375, 739125, 1231875, 2053125, 3695625, 6159375, 18478125]

約数ペア:

[(1, 18478125), (3, 6159375), (5, 3695625), (9, 2053125), (15, 1231875), (25, 739125), (27, 684375), (45, 410625), (73, 253125), (75, 246375), (81, 228125), (125, 147825), (135, 136875), (219, 84375), (225, 82125), (365, 50625), (375, 49275), (405, 45625), (625, 29565), (657, 28125), (675, 27375), (1095, 16875), (1125, 16425), (1825, 10125), (1875, 9855), (1971, 9375), (2025, 9125), (3125, 5913), (3285, 5625), (3375, 5475)]