21178065

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{3911}}^1$

素因数の和:3957

約数の個数: 24

約数和(自身を含む): 35771328

約数和(自身を除く): 14593263

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 361, 1083, 1805, 3911, 5415, 11733, 19555, 58665, 74309, 222927, 371545, 1114635, 1411871, 4235613, 7059355, 21178065]

約数ペア:

[(1, 21178065), (3, 7059355), (5, 4235613), (15, 1411871), (19, 1114635), (57, 371545), (95, 222927), (285, 74309), (361, 58665), (1083, 19555), (1805, 11733), (3911, 5415)]