81331855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:567

約数の個数: 32

約数和(自身を含む): 110481408

約数和(自身を除く): 29149553

約数列:

[1, 5, 11, 47, 55, 73, 235, 365, 431, 517, 803, 2155, 2585, 3431, 4015, 4741, 17155, 20257, 23705, 31463, 37741, 101285, 157315, 188705, 222827, 346093, 1114135, 1478761, 1730465, 7393805, 16266371, 81331855]

約数ペア:

[(1, 81331855), (5, 16266371), (11, 7393805), (47, 1730465), (55, 1478761), (73, 1114135), (235, 346093), (365, 222827), (431, 188705), (517, 157315), (803, 101285), (2155, 37741), (2585, 31463), (3431, 23705), (4015, 20257), (4741, 17155)]