28397260

素因数分解:

$2^2\times 5^1\times {\mathrm{877}}^1\times {\mathrm{1619}}^1$

素因数の和:2505

約数の個数: 24

約数和(自身を含む): 59739120

約数和(自身を除く): 31341860

約数列:

[1, 2, 4, 5, 10, 20, 877, 1619, 1754, 3238, 3508, 4385, 6476, 8095, 8770, 16190, 17540, 32380, 1419863, 2839726, 5679452, 7099315, 14198630, 28397260]

約数ペア:

[(1, 28397260), (2, 14198630), (4, 7099315), (5, 5679452), (10, 2839726), (20, 1419863), (877, 32380), (1619, 17540), (1754, 16190), (3238, 8770), (3508, 8095), (4385, 6476)]