21319389

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8677}}^1$

素因数の和:8706

約数の個数: 32

約数和(自身を含む): 38877440

約数和(自身を除く): 17558051

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8677, 26031, 60739, 78093, 112801, 182217, 234279, 338403, 546651, 789607, 1015209, 1639953, 2368821, 3045627, 7106463, 21319389]

約数ペア:

[(1, 21319389), (3, 7106463), (7, 3045627), (9, 2368821), (13, 1639953), (21, 1015209), (27, 789607), (39, 546651), (63, 338403), (91, 234279), (117, 182217), (189, 112801), (273, 78093), (351, 60739), (819, 26031), (2457, 8677)]