21571288

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{86981}}^1$

素因数の和:87018

約数の個数: 16

約数和(自身を含む): 41751360

約数和(自身を除く): 20180072

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 86981, 173962, 347924, 695848, 2696411, 5392822, 10785644, 21571288]

約数ペア:

[(1, 21571288), (2, 10785644), (4, 5392822), (8, 2696411), (31, 695848), (62, 347924), (124, 173962), (248, 86981)]