18006640

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{4789}}^1$

素因数の和:4849

約数の個数: 40

約数和(自身を含む): 42765120

約数和(自身を除く): 24758480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 4789, 9578, 19156, 23945, 38312, 47890, 76624, 95780, 191560, 225083, 383120, 450166, 900332, 1125415, 1800664, 2250830, 3601328, 4501660, 9003320, 18006640]

約数ペア:

[(1, 18006640), (2, 9003320), (4, 4501660), (5, 3601328), (8, 2250830), (10, 1800664), (16, 1125415), (20, 900332), (40, 450166), (47, 383120), (80, 225083), (94, 191560), (188, 95780), (235, 76624), (376, 47890), (470, 38312), (752, 23945), (940, 19156), (1880, 9578), (3760, 4789)]