19937439

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{761}}^1$

素因数の和:879

約数の個数: 24

約数和(自身を含む): 29955744

約数和(自身を除く): 10018305

約数列:

[1, 3, 9, 41, 71, 123, 213, 369, 639, 761, 2283, 2911, 6849, 8733, 26199, 31201, 54031, 93603, 162093, 280809, 486279, 2215271, 6645813, 19937439]

約数ペア:

[(1, 19937439), (3, 6645813), (9, 2215271), (41, 486279), (71, 280809), (123, 162093), (213, 93603), (369, 54031), (639, 31201), (761, 26199), (2283, 8733), (2911, 6849)]