20521340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{146581}}^1$

素因数の和:146597

約数の個数: 24

約数和(自身を含む): 49251552

約数和(自身を除く): 28730212

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 146581, 293162, 586324, 732905, 1026067, 1465810, 2052134, 2931620, 4104268, 5130335, 10260670, 20521340]

約数ペア:

[(1, 20521340), (2, 10260670), (4, 5130335), (5, 4104268), (7, 2931620), (10, 2052134), (14, 1465810), (20, 1026067), (28, 732905), (35, 586324), (70, 293162), (140, 146581)]