81182660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{312241}}^1$

素因数の和:312263

約数の個数: 24

約数和(自身を含む): 183598296

約数和(自身を除く): 102415636

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 312241, 624482, 1248964, 1561205, 3122410, 4059133, 6244820, 8118266, 16236532, 20295665, 40591330, 81182660]

約数ペア:

[(1, 81182660), (2, 40591330), (4, 20295665), (5, 16236532), (10, 8118266), (13, 6244820), (20, 4059133), (26, 3122410), (52, 1561205), (65, 1248964), (130, 624482), (260, 312241)]