21353318

素因数分解:

$2^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{1999}}^1$

素因数の和:2124

約数の個数: 24

約数和(自身を含む): 37620000

約数和(自身を除く): 16266682

約数列:

[1, 2, 7, 14, 49, 98, 109, 218, 763, 1526, 1999, 3998, 5341, 10682, 13993, 27986, 97951, 195902, 217891, 435782, 1525237, 3050474, 10676659, 21353318]

約数ペア:

[(1, 21353318), (2, 10676659), (7, 3050474), (14, 1525237), (49, 435782), (98, 217891), (109, 195902), (218, 97951), (763, 27986), (1526, 13993), (1999, 10682), (3998, 5341)]