21347703

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7933}}^1$

素因数の和:7975

約数の個数: 24

約数和(自身を含む): 34655712

約数和(自身を除く): 13308009

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 7933, 23799, 71397, 103129, 182459, 309387, 547377, 928161, 1642131, 2371967, 7115901, 21347703]

約数ペア:

[(1, 21347703), (3, 7115901), (9, 2371967), (13, 1642131), (23, 928161), (39, 547377), (69, 309387), (117, 182459), (207, 103129), (299, 71397), (897, 23799), (2691, 7933)]