28991215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{1223}}^1$

素因数の和:1670

約数の個数: 16

約数和(自身を含む): 38071296

約数和(自身を除く): 9080081

約数列:

[1, 5, 11, 55, 431, 1223, 2155, 4741, 6115, 13453, 23705, 67265, 527113, 2635565, 5798243, 28991215]

約数ペア:

[(1, 28991215), (5, 5798243), (11, 2635565), (55, 527113), (431, 67265), (1223, 23705), (2155, 13453), (4741, 6115)]