28709660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{205069}}^1$

素因数の和:205085

約数の個数: 24

約数和(自身を含む): 68903520

約数和(自身を除く): 40193860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 205069, 410138, 820276, 1025345, 1435483, 2050690, 2870966, 4101380, 5741932, 7177415, 14354830, 28709660]

約数ペア:

[(1, 28709660), (2, 14354830), (4, 7177415), (5, 5741932), (7, 4101380), (10, 2870966), (14, 2050690), (20, 1435483), (28, 1025345), (35, 820276), (70, 410138), (140, 205069)]