215678889

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{6553}}^1$

素因数の和:6638

約数の個数: 32

約数和(自身を含む): 339759360

約数和(自身を除く): 124080471

約数列:

[1, 3, 9, 23, 27, 53, 69, 159, 207, 477, 621, 1219, 1431, 3657, 6553, 10971, 19659, 32913, 58977, 150719, 176931, 347309, 452157, 1041927, 1356471, 3125781, 4069413, 7988107, 9377343, 23964321, 71892963, 215678889]

約数ペア:

[(1, 215678889), (3, 71892963), (9, 23964321), (23, 9377343), (27, 7988107), (53, 4069413), (69, 3125781), (159, 1356471), (207, 1041927), (477, 452157), (621, 347309), (1219, 176931), (1431, 150719), (3657, 58977), (6553, 32913), (10971, 19659)]