20798541

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{241}}^1$

素因数の和:513

約数の個数: 24

約数和(自身を含む): 31006976

約数和(自身を除く): 10208435

約数列:

[1, 3, 9, 43, 129, 223, 241, 387, 669, 723, 2007, 2169, 9589, 10363, 28767, 31089, 53743, 86301, 93267, 161229, 483687, 2310949, 6932847, 20798541]

約数ペア:

[(1, 20798541), (3, 6932847), (9, 2310949), (43, 483687), (129, 161229), (223, 93267), (241, 86301), (387, 53743), (669, 31089), (723, 28767), (2007, 10363), (2169, 9589)]