81229445

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{409}}^1$

素因数の和:605

約数の個数: 32

約数和(自身を含む): 111939840

約数和(自身を除く): 30710395

約数列:

[1, 5, 11, 23, 55, 115, 157, 253, 409, 785, 1265, 1727, 2045, 3611, 4499, 8635, 9407, 18055, 22495, 39721, 47035, 64213, 103477, 198605, 321065, 517385, 706343, 1476899, 3531715, 7384495, 16245889, 81229445]

約数ペア:

[(1, 81229445), (5, 16245889), (11, 7384495), (23, 3531715), (55, 1476899), (115, 706343), (157, 517385), (253, 321065), (409, 198605), (785, 103477), (1265, 64213), (1727, 47035), (2045, 39721), (3611, 22495), (4499, 18055), (8635, 9407)]