21181635

素因数分解:

$3^3\times 5^1\times {\mathrm{156901}}^1$

素因数の和:156915

約数の個数: 16

約数和(自身を含む): 37656480

約数和(自身を除く): 16474845

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 156901, 470703, 784505, 1412109, 2353515, 4236327, 7060545, 21181635]

約数ペア:

[(1, 21181635), (3, 7060545), (5, 4236327), (9, 2353515), (15, 1412109), (27, 784505), (45, 470703), (135, 156901)]