81305455

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{30169}}^1$

素因数の和:30199

約数の個数: 24

約数和(自身を含む): 123817680

約数和(自身を除く): 42512225

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 30169, 150845, 211183, 331859, 1055915, 1478281, 1659295, 2323013, 7391405, 11615065, 16261091, 81305455]

約数ペア:

[(1, 81305455), (5, 16261091), (7, 11615065), (11, 7391405), (35, 2323013), (49, 1659295), (55, 1478281), (77, 1055915), (245, 331859), (385, 211183), (539, 150845), (2695, 30169)]