21150969

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{397}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 33623040

約数和(自身を除く): 12472071

約数列:

[1, 3, 7, 21, 43, 59, 129, 177, 301, 397, 413, 903, 1191, 1239, 2537, 2779, 7611, 8337, 17071, 17759, 23423, 51213, 53277, 70269, 119497, 163961, 358491, 491883, 1007189, 3021567, 7050323, 21150969]

約数ペア:

[(1, 21150969), (3, 7050323), (7, 3021567), (21, 1007189), (43, 491883), (59, 358491), (129, 163961), (177, 119497), (301, 70269), (397, 53277), (413, 51213), (903, 23423), (1191, 17759), (1239, 17071), (2537, 8337), (2779, 7611)]