21276555

素因数分解:

$3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{5273}}^1$

素因数の和:5550

約数の個数: 16

約数和(自身を含む): 34175520

約数和(自身を除く): 12898965

約数列:

[1, 3, 5, 15, 269, 807, 1345, 4035, 5273, 15819, 26365, 79095, 1418437, 4255311, 7092185, 21276555]

約数ペア:

[(1, 21276555), (3, 7092185), (5, 4255311), (15, 1418437), (269, 79095), (807, 26365), (1345, 15819), (4035, 5273)]