81928520

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{43579}}^1$

素因数の和:43637

約数の個数: 32

約数和(自身を含む): 188265600

約数和(自身を除く): 106337080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 43579, 87158, 174316, 217895, 348632, 435790, 871580, 1743160, 2048213, 4096426, 8192852, 10241065, 16385704, 20482130, 40964260, 81928520]

約数ペア:

[(1, 81928520), (2, 40964260), (4, 20482130), (5, 16385704), (8, 10241065), (10, 8192852), (20, 4096426), (40, 2048213), (47, 1743160), (94, 871580), (188, 435790), (235, 348632), (376, 217895), (470, 174316), (940, 87158), (1880, 43579)]