19158777

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{241}}^1$

素因数の和:342

約数の個数: 36

約数和(自身を含む): 30962932

約数和(自身を除く): 11804155

約数列:

[1, 3, 9, 11, 33, 73, 99, 121, 219, 241, 363, 657, 723, 803, 1089, 2169, 2409, 2651, 7227, 7953, 8833, 17593, 23859, 26499, 29161, 52779, 79497, 87483, 158337, 193523, 262449, 580569, 1741707, 2128753, 6386259, 19158777]

約数ペア:

[(1, 19158777), (3, 6386259), (9, 2128753), (11, 1741707), (33, 580569), (73, 262449), (99, 193523), (121, 158337), (219, 87483), (241, 79497), (363, 52779), (657, 29161), (723, 26499), (803, 23859), (1089, 17593), (2169, 8833), (2409, 7953), (2651, 7227)]