28199660

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{7877}}^1$

素因数の和:8065

約数の個数: 24

約数和(自身を含む): 59557680

約数和(自身を除く): 31358020

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 7877, 15754, 31508, 39385, 78770, 157540, 1409983, 2819966, 5639932, 7049915, 14099830, 28199660]

約数ペア:

[(1, 28199660), (2, 14099830), (4, 7049915), (5, 5639932), (10, 2819966), (20, 1409983), (179, 157540), (358, 78770), (716, 39385), (895, 31508), (1790, 15754), (3580, 7877)]