81170820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{450949}}^1$

素因数の和:450964

約数の個数: 36

約数和(自身を含む): 246218700

約数和(自身を除く): 165047880

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 450949, 901898, 1352847, 1803796, 2254745, 2705694, 4058541, 4509490, 5411388, 6764235, 8117082, 9018980, 13528470, 16234164, 20292705, 27056940, 40585410, 81170820]

約数ペア:

[(1, 81170820), (2, 40585410), (3, 27056940), (4, 20292705), (5, 16234164), (6, 13528470), (9, 9018980), (10, 8117082), (12, 6764235), (15, 5411388), (18, 4509490), (20, 4058541), (30, 2705694), (36, 2254745), (45, 1803796), (60, 1352847), (90, 901898), (180, 450949)]