28407775

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{9391}}^1$

素因数の和:9423

約数の個数: 18

約数和(自身を含む): 38723216

約数和(自身を除く): 10315441

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 9391, 46955, 103301, 234775, 516505, 1136311, 2582525, 5681555, 28407775]

約数ペア:

[(1, 28407775), (5, 5681555), (11, 2582525), (25, 1136311), (55, 516505), (121, 234775), (275, 103301), (605, 46955), (3025, 9391)]