858307820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{703531}}^1$

素因数の和:703601

約数の個数: 24

約数和(自身を含む): 1831997328

約数和(自身を除く): 973689508

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 703531, 1407062, 2814124, 3517655, 7035310, 14070620, 42915391, 85830782, 171661564, 214576955, 429153910, 858307820]

約数ペア:

[(1, 858307820), (2, 429153910), (4, 214576955), (5, 171661564), (10, 85830782), (20, 42915391), (61, 14070620), (122, 7035310), (244, 3517655), (305, 2814124), (610, 1407062), (1220, 703531)]