81645003

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2131}}^1$

素因数の和:2197

約数の個数: 40

約数和(自身を含む): 136209216

約数和(自身を除く): 54564213

約数列:

[1, 3, 9, 11, 27, 33, 43, 81, 99, 129, 297, 387, 473, 891, 1161, 1419, 2131, 3483, 4257, 6393, 12771, 19179, 23441, 38313, 57537, 70323, 91633, 172611, 210969, 274899, 632907, 824697, 1007963, 1898721, 2474091, 3023889, 7422273, 9071667, 27215001, 81645003]

約数ペア:

[(1, 81645003), (3, 27215001), (9, 9071667), (11, 7422273), (27, 3023889), (33, 2474091), (43, 1898721), (81, 1007963), (99, 824697), (129, 632907), (297, 274899), (387, 210969), (473, 172611), (891, 91633), (1161, 70323), (1419, 57537), (2131, 38313), (3483, 23441), (4257, 19179), (6393, 12771)]