21508155

素因数分解:

$3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{8101}}^1$

素因数の和:8171

約数の個数: 24

約数和(自身を含む): 37917360

約数和(自身を除く): 16409205

約数列:

[1, 3, 5, 9, 15, 45, 59, 177, 295, 531, 885, 2655, 8101, 24303, 40505, 72909, 121515, 364545, 477959, 1433877, 2389795, 4301631, 7169385, 21508155]

約数ペア:

[(1, 21508155), (3, 7169385), (5, 4301631), (9, 2389795), (15, 1433877), (45, 477959), (59, 364545), (177, 121515), (295, 72909), (531, 40505), (885, 24303), (2655, 8101)]