20256399

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:249

約数の個数: 40

約数和(自身を含む): 32199552

約数和(自身を除く): 11943153

約数列:

[1, 3, 9, 23, 27, 69, 81, 83, 131, 207, 249, 393, 621, 747, 1179, 1863, 1909, 2241, 3013, 3537, 5727, 6723, 9039, 10611, 10873, 17181, 27117, 32619, 51543, 81351, 97857, 154629, 244053, 250079, 293571, 750237, 880713, 2250711, 6752133, 20256399]

約数ペア:

[(1, 20256399), (3, 6752133), (9, 2250711), (23, 880713), (27, 750237), (69, 293571), (81, 250079), (83, 244053), (131, 154629), (207, 97857), (249, 81351), (393, 51543), (621, 32619), (747, 27117), (1179, 17181), (1863, 10873), (1909, 10611), (2241, 9039), (3013, 6723), (3537, 5727)]