129412810

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{439}}^1\times {\mathrm{719}}^1$

素因数の和:1206

約数の個数: 32

約数和(自身を含む): 239500800

約数和(自身を除く): 110087990

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 439, 719, 878, 1438, 2195, 3595, 4390, 7190, 17999, 29479, 35998, 58958, 89995, 147395, 179990, 294790, 315641, 631282, 1578205, 3156410, 12941281, 25882562, 64706405, 129412810]

約数ペア:

[(1, 129412810), (2, 64706405), (5, 25882562), (10, 12941281), (41, 3156410), (82, 1578205), (205, 631282), (410, 315641), (439, 294790), (719, 179990), (878, 147395), (1438, 89995), (2195, 58958), (3595, 35998), (4390, 29479), (7190, 17999)]