21551691

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{25031}}^1$

素因数の和:25082

約数の個数: 16

約数和(自身を含む): 33643008

約数和(自身を除く): 12091317

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 25031, 75093, 175217, 525651, 1026271, 3078813, 7183897, 21551691]

約数ペア:

[(1, 21551691), (3, 7183897), (7, 3078813), (21, 1026271), (41, 525651), (123, 175217), (287, 75093), (861, 25031)]