21031903879

素因数分解:

$7^1\times {\mathrm{139}}^1\times {\mathrm{1321}}^1\times {\mathrm{16363}}^1$

素因数の和:17830

約数の個数: 16

約数和(自身を含む): 24229192960

約数和(自身を除く): 3197289081

約数列:

[1, 7, 139, 973, 1321, 9247, 16363, 114541, 183619, 1285333, 2274457, 15921199, 21615523, 151308661, 3004557697, 21031903879]

約数ペア:

[(1, 21031903879), (7, 3004557697), (139, 151308661), (973, 21615523), (1321, 15921199), (9247, 2274457), (16363, 1285333), (114541, 183619)]