21261705

素因数分解:

$3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{11161}}^1$

素因数の和:11296

約数の個数: 16

約数和(自身を含む): 34289664

約数和(自身を除く): 13027959

約数列:

[1, 3, 5, 15, 127, 381, 635, 1905, 11161, 33483, 55805, 167415, 1417447, 4252341, 7087235, 21261705]

約数ペア:

[(1, 21261705), (3, 7087235), (5, 4252341), (15, 1417447), (127, 167415), (381, 55805), (635, 33483), (1905, 11161)]