18217575

素因数分解:

$3^3\times 5^2\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 33881760

約数和(自身を除く): 15664185

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 137, 197, 225, 411, 591, 675, 685, 985, 1233, 1773, 2055, 2955, 3425, 3699, 4925, 5319, 6165, 8865, 10275, 14775, 18495, 26595, 26989, 30825, 44325, 80967, 92475, 132975, 134945, 242901, 404835, 674725, 728703, 1214505, 2024175, 3643515, 6072525, 18217575]

約数ペア:

[(1, 18217575), (3, 6072525), (5, 3643515), (9, 2024175), (15, 1214505), (25, 728703), (27, 674725), (45, 404835), (75, 242901), (135, 134945), (137, 132975), (197, 92475), (225, 80967), (411, 44325), (591, 30825), (675, 26989), (685, 26595), (985, 18495), (1233, 14775), (1773, 10275), (2055, 8865), (2955, 6165), (3425, 5319), (3699, 4925)]