20156780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{143977}}^1$

素因数の和:143993

約数の個数: 24

約数和(自身を含む): 48376608

約数和(自身を除く): 28219828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 143977, 287954, 575908, 719885, 1007839, 1439770, 2015678, 2879540, 4031356, 5039195, 10078390, 20156780]

約数ペア:

[(1, 20156780), (2, 10078390), (4, 5039195), (5, 4031356), (7, 2879540), (10, 2015678), (14, 1439770), (20, 1007839), (28, 719885), (35, 575908), (70, 287954), (140, 143977)]