18955863

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:253

約数の個数: 40

約数和(自身を含む): 30346800

約数和(自身を除く): 11390937

約数列:

[1, 3, 9, 19, 27, 57, 81, 109, 113, 171, 327, 339, 513, 981, 1017, 1539, 2071, 2147, 2943, 3051, 6213, 6441, 8829, 9153, 12317, 18639, 19323, 36951, 55917, 57969, 110853, 167751, 173907, 234023, 332559, 702069, 997677, 2106207, 6318621, 18955863]

約数ペア:

[(1, 18955863), (3, 6318621), (9, 2106207), (19, 997677), (27, 702069), (57, 332559), (81, 234023), (109, 173907), (113, 167751), (171, 110853), (327, 57969), (339, 55917), (513, 36951), (981, 19323), (1017, 18639), (1539, 12317), (2071, 9153), (2147, 8829), (2943, 6441), (3051, 6213)]