20127172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{4349}}^1$

素因数の和:4455

約数の個数: 24

約数和(自身を含む): 38367000

約数和(自身を除く): 18239828

約数列:

[1, 2, 4, 13, 26, 52, 89, 178, 356, 1157, 2314, 4349, 4628, 8698, 17396, 56537, 113074, 226148, 387061, 774122, 1548244, 5031793, 10063586, 20127172]

約数ペア:

[(1, 20127172), (2, 10063586), (4, 5031793), (13, 1548244), (26, 774122), (52, 387061), (89, 226148), (178, 113074), (356, 56537), (1157, 17396), (2314, 8698), (4349, 4628)]