128873180

素因数分解:

$2^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{20327}}^1$

素因数の和:20653

約数の個数: 24

約数和(自身を含む): 271500768

約数和(自身を除く): 142627588

約数列:

[1, 2, 4, 5, 10, 20, 317, 634, 1268, 1585, 3170, 6340, 20327, 40654, 81308, 101635, 203270, 406540, 6443659, 12887318, 25774636, 32218295, 64436590, 128873180]

約数ペア:

[(1, 128873180), (2, 64436590), (4, 32218295), (5, 25774636), (10, 12887318), (20, 6443659), (317, 406540), (634, 203270), (1268, 101635), (1585, 81308), (3170, 40654), (6340, 20327)]