19444905

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 35582976

約数和(自身を除く): 16138071

約数列:

[1, 3, 5, 9, 15, 31, 45, 53, 93, 155, 159, 263, 265, 279, 465, 477, 789, 795, 1315, 1395, 1643, 2367, 2385, 3945, 4929, 8153, 8215, 11835, 13939, 14787, 24459, 24645, 40765, 41817, 69695, 73377, 73935, 122295, 125451, 209085, 366885, 432109, 627255, 1296327, 2160545, 3888981, 6481635, 19444905]

約数ペア:

[(1, 19444905), (3, 6481635), (5, 3888981), (9, 2160545), (15, 1296327), (31, 627255), (45, 432109), (53, 366885), (93, 209085), (155, 125451), (159, 122295), (263, 73935), (265, 73377), (279, 69695), (465, 41817), (477, 40765), (789, 24645), (795, 24459), (1315, 14787), (1395, 13939), (1643, 11835), (2367, 8215), (2385, 8153), (3945, 4929)]