18017920

素因数分解:

$2^7\times 5^1\times {\mathrm{47}}^1\times {\mathrm{599}}^1$

素因数の和:665

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 26046080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 320, 376, 470, 599, 640, 752, 940, 1198, 1504, 1880, 2396, 2995, 3008, 3760, 4792, 5990, 6016, 7520, 9584, 11980, 15040, 19168, 23960, 28153, 30080, 38336, 47920, 56306, 76672, 95840, 112612, 140765, 191680, 225224, 281530, 383360, 450448, 563060, 900896, 1126120, 1801792, 2252240, 3603584, 4504480, 9008960, 18017920]

約数ペア:

[(1, 18017920), (2, 9008960), (4, 4504480), (5, 3603584), (8, 2252240), (10, 1801792), (16, 1126120), (20, 900896), (32, 563060), (40, 450448), (47, 383360), (64, 281530), (80, 225224), (94, 191680), (128, 140765), (160, 112612), (188, 95840), (235, 76672), (320, 56306), (376, 47920), (470, 38336), (599, 30080), (640, 28153), (752, 23960), (940, 19168), (1198, 15040), (1504, 11980), (1880, 9584), (2396, 7520), (2995, 6016), (3008, 5990), (3760, 4792)]