18991158

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^1\times {\mathrm{102103}}^1$

素因数の和:102139

約数の個数: 16

約数和(自身を含む): 39207936

約数和(自身を除く): 20216778

約数列:

[1, 2, 3, 6, 31, 62, 93, 186, 102103, 204206, 306309, 612618, 3165193, 6330386, 9495579, 18991158]

約数ペア:

[(1, 18991158), (2, 9495579), (3, 6330386), (6, 3165193), (31, 612618), (62, 306309), (93, 204206), (186, 102103)]