28128399

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 42108864

約数和(自身を除く): 13980465

約数列:

[1, 3, 13, 37, 39, 101, 111, 193, 303, 481, 579, 1313, 1443, 2509, 3737, 3939, 7141, 7527, 11211, 19493, 21423, 48581, 58479, 92833, 145743, 253409, 278499, 721241, 760227, 2163723, 9376133, 28128399]

約数ペア:

[(1, 28128399), (3, 9376133), (13, 2163723), (37, 760227), (39, 721241), (101, 278499), (111, 253409), (193, 145743), (303, 92833), (481, 58479), (579, 48581), (1313, 21423), (1443, 19493), (2509, 11211), (3737, 7527), (3939, 7141)]