51872643

素因数分解:

$3^4\times {\mathrm{157}}^1\times {\mathrm{4079}}^1$

素因数の和:4248

約数の個数: 20

約数和(自身を含む): 78001440

約数和(自身を除く): 26128797

約数列:

[1, 3, 9, 27, 81, 157, 471, 1413, 4079, 4239, 12237, 12717, 36711, 110133, 330399, 640403, 1921209, 5763627, 17290881, 51872643]

約数ペア:

[(1, 51872643), (3, 17290881), (9, 5763627), (27, 1921209), (81, 640403), (157, 330399), (471, 110133), (1413, 36711), (4079, 12717), (4239, 12237)]