21867951

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 34743808

約数和(自身を除く): 12875857

約数列:

[1, 3, 7, 21, 43, 61, 129, 183, 301, 397, 427, 903, 1191, 1281, 2623, 2779, 7869, 8337, 17071, 18361, 24217, 51213, 55083, 72651, 119497, 169519, 358491, 508557, 1041331, 3123993, 7289317, 21867951]

約数ペア:

[(1, 21867951), (3, 7289317), (7, 3123993), (21, 1041331), (43, 508557), (61, 358491), (129, 169519), (183, 119497), (301, 72651), (397, 55083), (427, 51213), (903, 24217), (1191, 18361), (1281, 17071), (2623, 8337), (2779, 7869)]