20191420

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2543}}^1$

素因数の和:2949

約数の個数: 24

約数和(自身を含む): 42525504

約数和(自身を除く): 22334084

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2543, 3970, 5086, 7940, 10172, 12715, 25430, 50860, 1009571, 2019142, 4038284, 5047855, 10095710, 20191420]

約数ペア:

[(1, 20191420), (2, 10095710), (4, 5047855), (5, 4038284), (10, 2019142), (20, 1009571), (397, 50860), (794, 25430), (1588, 12715), (1985, 10172), (2543, 7940), (3970, 5086)]