81305945

素因数分解:

$5^1\times 7^2\times {\mathrm{281}}^1\times {\mathrm{1181}}^1$

素因数の和:1481

約数の個数: 24

約数和(自身を含む): 113996808

約数和(自身を除く): 32690863

約数列:

[1, 5, 7, 35, 49, 245, 281, 1181, 1405, 1967, 5905, 8267, 9835, 13769, 41335, 57869, 68845, 289345, 331861, 1659305, 2323027, 11615135, 16261189, 81305945]

約数ペア:

[(1, 81305945), (5, 16261189), (7, 11615135), (35, 2323027), (49, 1659305), (245, 331861), (281, 289345), (1181, 68845), (1405, 57869), (1967, 41335), (5905, 13769), (8267, 9835)]