18205641

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5227}}^1$

素因数の和:5282

約数の個数: 20

約数和(自身を含む): 27833872

約数和(自身を除く): 9628231

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5227, 15681, 47043, 141129, 224761, 423387, 674283, 2022849, 6068547, 18205641]

約数ペア:

[(1, 18205641), (3, 6068547), (9, 2022849), (27, 674283), (43, 423387), (81, 224761), (129, 141129), (387, 47043), (1161, 15681), (3483, 5227)]