19919979

素因数分解:

$3^3\times {\mathrm{113}}^1\times {\mathrm{6529}}^1$

素因数の和:6651

約数の個数: 16

約数和(自身を含む): 29776800

約数和(自身を除く): 9856821

約数列:

[1, 3, 9, 27, 113, 339, 1017, 3051, 6529, 19587, 58761, 176283, 737777, 2213331, 6639993, 19919979]

約数ペア:

[(1, 19919979), (3, 6639993), (9, 2213331), (27, 737777), (113, 176283), (339, 58761), (1017, 19587), (3051, 6529)]