21836217

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1$

素因数の和:537

約数の個数: 32

約数和(自身を含む): 33264000

約数和(自身を除く): 11427783

約数列:

[1, 3, 13, 29, 39, 43, 87, 129, 377, 449, 559, 1131, 1247, 1347, 1677, 3741, 5837, 13021, 16211, 17511, 19307, 39063, 48633, 57921, 169273, 250991, 507819, 559903, 752973, 1679709, 7278739, 21836217]

約数ペア:

[(1, 21836217), (3, 7278739), (13, 1679709), (29, 752973), (39, 559903), (43, 507819), (87, 250991), (129, 169273), (377, 57921), (449, 48633), (559, 39063), (1131, 19307), (1247, 17511), (1347, 16211), (1677, 13021), (3741, 5837)]