18981765

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1237}}^1$

素因数の和:1290

約数の個数: 48

約数和(自身を含む): 37080576

約数和(自身を除く): 18098811

約数列:

[1, 3, 5, 9, 11, 15, 31, 33, 45, 55, 93, 99, 155, 165, 279, 341, 465, 495, 1023, 1237, 1395, 1705, 3069, 3711, 5115, 6185, 11133, 13607, 15345, 18555, 38347, 40821, 55665, 68035, 115041, 122463, 191735, 204105, 345123, 421817, 575205, 612315, 1265451, 1725615, 2109085, 3796353, 6327255, 18981765]

約数ペア:

[(1, 18981765), (3, 6327255), (5, 3796353), (9, 2109085), (11, 1725615), (15, 1265451), (31, 612315), (33, 575205), (45, 421817), (55, 345123), (93, 204105), (99, 191735), (155, 122463), (165, 115041), (279, 68035), (341, 55665), (465, 40821), (495, 38347), (1023, 18555), (1237, 15345), (1395, 13607), (1705, 11133), (3069, 6185), (3711, 5115)]