81018575

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{26783}}^1$

素因数の和:26815

約数の個数: 18

約数和(自身を含む): 110430432

約数和(自身を除く): 29411857

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 26783, 133915, 294613, 669575, 1473065, 3240743, 7365325, 16203715, 81018575]

約数ペア:

[(1, 81018575), (5, 16203715), (11, 7365325), (25, 3240743), (55, 1473065), (121, 669575), (275, 294613), (605, 133915), (3025, 26783)]