18393723

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5281}}^1$

素因数の和:5336

約数の個数: 20

約数和(自身を含む): 28121368

約数和(自身を除く): 9727645

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5281, 15843, 47529, 142587, 227083, 427761, 681249, 2043747, 6131241, 18393723]

約数ペア:

[(1, 18393723), (3, 6131241), (9, 2043747), (27, 681249), (43, 427761), (81, 227083), (129, 142587), (387, 47529), (1161, 15843), (3483, 5281)]