20639439

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{827}}^1$

素因数の和:939

約数の個数: 24

約数和(自身を含む): 31000320

約数和(自身を除く): 10360881

約数列:

[1, 3, 9, 47, 59, 141, 177, 423, 531, 827, 2481, 2773, 7443, 8319, 24957, 38869, 48793, 116607, 146379, 349821, 439137, 2293271, 6879813, 20639439]

約数ペア:

[(1, 20639439), (3, 6879813), (9, 2293271), (47, 439137), (59, 349821), (141, 146379), (177, 116607), (423, 48793), (531, 38869), (827, 24957), (2481, 8319), (2773, 7443)]