81243260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{12347}}^1$

素因数の和:12410

約数の個数: 48

約数和(自身を含む): 199148544

約数和(自身を除く): 117905284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3290, 6580, 12347, 24694, 49388, 61735, 86429, 123470, 172858, 246940, 345716, 432145, 580309, 864290, 1160618, 1728580, 2321236, 2901545, 4062163, 5803090, 8124326, 11606180, 16248652, 20310815, 40621630, 81243260]

約数ペア:

[(1, 81243260), (2, 40621630), (4, 20310815), (5, 16248652), (7, 11606180), (10, 8124326), (14, 5803090), (20, 4062163), (28, 2901545), (35, 2321236), (47, 1728580), (70, 1160618), (94, 864290), (140, 580309), (188, 432145), (235, 345716), (329, 246940), (470, 172858), (658, 123470), (940, 86429), (1316, 61735), (1645, 49388), (3290, 24694), (6580, 12347)]