18722529

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 34099200

約数和(自身を除く): 15376671

約数列:

[1, 3, 7, 9, 21, 23, 27, 59, 63, 69, 73, 161, 177, 189, 207, 219, 413, 483, 511, 531, 621, 657, 1239, 1357, 1449, 1533, 1593, 1679, 1971, 3717, 4071, 4307, 4347, 4599, 5037, 9499, 11151, 11753, 12213, 12921, 13797, 15111, 28497, 30149, 35259, 36639, 38763, 45333, 85491, 90447, 99061, 105777, 116289, 256473, 271341, 297183, 317331, 693427, 814023, 891549, 2080281, 2674647, 6240843, 18722529]

約数ペア:

[(1, 18722529), (3, 6240843), (7, 2674647), (9, 2080281), (21, 891549), (23, 814023), (27, 693427), (59, 317331), (63, 297183), (69, 271341), (73, 256473), (161, 116289), (177, 105777), (189, 99061), (207, 90447), (219, 85491), (413, 45333), (483, 38763), (511, 36639), (531, 35259), (621, 30149), (657, 28497), (1239, 15111), (1357, 13797), (1449, 12921), (1533, 12213), (1593, 11753), (1679, 11151), (1971, 9499), (3717, 5037), (4071, 4599), (4307, 4347)]