21705228

素因数分解:

$2^2\times 3^2\times {\mathrm{443}}^1\times {\mathrm{1361}}^1$

素因数の和:1814

約数の個数: 36

約数和(自身を含む): 55030248

約数和(自身を除く): 33325020

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 443, 886, 1329, 1361, 1772, 2658, 2722, 3987, 4083, 5316, 5444, 7974, 8166, 12249, 15948, 16332, 24498, 48996, 602923, 1205846, 1808769, 2411692, 3617538, 5426307, 7235076, 10852614, 21705228]

約数ペア:

[(1, 21705228), (2, 10852614), (3, 7235076), (4, 5426307), (6, 3617538), (9, 2411692), (12, 1808769), (18, 1205846), (36, 602923), (443, 48996), (886, 24498), (1329, 16332), (1361, 15948), (1772, 12249), (2658, 8166), (2722, 7974), (3987, 5444), (4083, 5316)]