28019620

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10079}}^1$

素因数の和:10227

約数の個数: 24

約数和(自身を含む): 59270400

約数和(自身を除く): 31250780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 10079, 20158, 40316, 50395, 100790, 201580, 1400981, 2801962, 5603924, 7004905, 14009810, 28019620]

約数ペア:

[(1, 28019620), (2, 14009810), (4, 7004905), (5, 5603924), (10, 2801962), (20, 1400981), (139, 201580), (278, 100790), (556, 50395), (695, 40316), (1390, 20158), (2780, 10079)]