19856745

素因数分解:

$3^5\times 5^1\times {\mathrm{59}}^1\times {\mathrm{277}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 36429120

約数和(自身を除く): 16572375

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 81, 135, 177, 243, 277, 295, 405, 531, 831, 885, 1215, 1385, 1593, 2493, 2655, 4155, 4779, 7479, 7965, 12465, 14337, 16343, 22437, 23895, 37395, 49029, 67311, 71685, 81715, 112185, 147087, 245145, 336555, 441261, 735435, 1323783, 2206305, 3971349, 6618915, 19856745]

約数ペア:

[(1, 19856745), (3, 6618915), (5, 3971349), (9, 2206305), (15, 1323783), (27, 735435), (45, 441261), (59, 336555), (81, 245145), (135, 147087), (177, 112185), (243, 81715), (277, 71685), (295, 67311), (405, 49029), (531, 37395), (831, 23895), (885, 22437), (1215, 16343), (1385, 14337), (1593, 12465), (2493, 7965), (2655, 7479), (4155, 4779)]