21178935

素因数分解:

$3^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2659}}^1$

素因数の和:2732

約数の個数: 32

約数和(自身を含む): 38304000

約数和(自身を除く): 17125065

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 135, 177, 295, 531, 885, 1593, 2655, 2659, 7965, 7977, 13295, 23931, 39885, 71793, 119655, 156881, 358965, 470643, 784405, 1411929, 2353215, 4235787, 7059645, 21178935]

約数ペア:

[(1, 21178935), (3, 7059645), (5, 4235787), (9, 2353215), (15, 1411929), (27, 784405), (45, 470643), (59, 358965), (135, 156881), (177, 119655), (295, 71793), (531, 39885), (885, 23931), (1593, 13295), (2655, 7977), (2659, 7965)]