21857585

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1\times {\mathrm{331}}^1$

素因数の和:664

約数の個数: 16

約数和(自身を含む): 26963712

約数和(自身を除く): 5106127

約数列:

[1, 5, 47, 235, 281, 331, 1405, 1655, 13207, 15557, 66035, 77785, 93011, 465055, 4371517, 21857585]

約数ペア:

[(1, 21857585), (5, 4371517), (47, 465055), (235, 93011), (281, 77785), (331, 66035), (1405, 15557), (1655, 13207)]