19764305

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 27105408

約数和(自身を除く): 7341103

約数列:

[1, 5, 11, 43, 55, 61, 137, 215, 305, 473, 671, 685, 1507, 2365, 2623, 3355, 5891, 7535, 8357, 13115, 28853, 29455, 41785, 64801, 91927, 144265, 324005, 359351, 459635, 1796755, 3952861, 19764305]

約数ペア:

[(1, 19764305), (5, 3952861), (11, 1796755), (43, 459635), (55, 359351), (61, 324005), (137, 144265), (215, 91927), (305, 64801), (473, 41785), (671, 29455), (685, 28853), (1507, 13115), (2365, 8357), (2623, 7535), (3355, 5891)]