21017421297

素因数分解:

$3^4\times {\mathrm{241}}^1\times {\mathrm{1076657}}^1$

素因数の和:1076910

約数の個数: 20

約数和(自身を含む): 31526699556

約数和(自身を除く): 10509278259

約数列:

[1, 3, 9, 27, 81, 241, 723, 2169, 6507, 19521, 1076657, 3229971, 9689913, 29069739, 87209217, 259474337, 778423011, 2335269033, 7005807099, 21017421297]

約数ペア:

[(1, 21017421297), (3, 7005807099), (9, 2335269033), (27, 778423011), (81, 259474337), (241, 87209217), (723, 29069739), (2169, 9689913), (6507, 3229971), (19521, 1076657)]