21531153

素因数分解:

$3^1\times 7^1\times {\mathrm{419}}^1\times {\mathrm{2447}}^1$

素因数の和:2876

約数の個数: 16

約数和(自身を含む): 32901120

約数和(自身を除く): 11369967

約数列:

[1, 3, 7, 21, 419, 1257, 2447, 2933, 7341, 8799, 17129, 51387, 1025293, 3075879, 7177051, 21531153]

約数ペア:

[(1, 21531153), (3, 7177051), (7, 3075879), (21, 1025293), (419, 51387), (1257, 17129), (2447, 8799), (2933, 7341)]