20215419

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{443}}^1$

素因数の和:547

約数の個数: 32

約数和(自身を含む): 32223744

約数和(自身を除く): 12008325

約数列:

[1, 3, 7, 21, 41, 53, 123, 159, 287, 371, 443, 861, 1113, 1329, 2173, 3101, 6519, 9303, 15211, 18163, 23479, 45633, 54489, 70437, 127141, 164353, 381423, 493059, 962639, 2887917, 6738473, 20215419]

約数ペア:

[(1, 20215419), (3, 6738473), (7, 2887917), (21, 962639), (41, 493059), (53, 381423), (123, 164353), (159, 127141), (287, 70437), (371, 54489), (443, 45633), (861, 23479), (1113, 18163), (1329, 15211), (2173, 9303), (3101, 6519)]