18991638

素因数分解:

$2^1\times 3^3\times {\mathrm{43}}^1\times {\mathrm{8179}}^1$

素因数の和:8233

約数の個数: 32

約数和(自身を含む): 43190400

約数和(自身を除く): 24198762

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 54, 86, 129, 258, 387, 774, 1161, 2322, 8179, 16358, 24537, 49074, 73611, 147222, 220833, 351697, 441666, 703394, 1055091, 2110182, 3165273, 6330546, 9495819, 18991638]

約数ペア:

[(1, 18991638), (2, 9495819), (3, 6330546), (6, 3165273), (9, 2110182), (18, 1055091), (27, 703394), (43, 441666), (54, 351697), (86, 220833), (129, 147222), (258, 73611), (387, 49074), (774, 24537), (1161, 16358), (2322, 8179)]