81437784

素因数分解:

$2^3\times 3^1\times {\mathrm{157}}^1\times {\mathrm{21613}}^1$

素因数の和:21779

約数の個数: 32

約数和(自身を含む): 204900720

約数和(自身を除く): 123462936

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 157, 314, 471, 628, 942, 1256, 1884, 3768, 21613, 43226, 64839, 86452, 129678, 172904, 259356, 518712, 3393241, 6786482, 10179723, 13572964, 20359446, 27145928, 40718892, 81437784]

約数ペア:

[(1, 81437784), (2, 40718892), (3, 27145928), (4, 20359446), (6, 13572964), (8, 10179723), (12, 6786482), (24, 3393241), (157, 518712), (314, 259356), (471, 172904), (628, 129678), (942, 86452), (1256, 64839), (1884, 43226), (3768, 21613)]