31388247

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:125

約数の個数: 72

約数和(自身を含む): 55189680

約数和(自身を除く): 23801433

約数列:

[1, 3, 9, 11, 19, 33, 37, 41, 57, 99, 111, 121, 123, 171, 209, 333, 363, 369, 407, 451, 627, 703, 779, 1089, 1221, 1353, 1517, 1881, 2109, 2299, 2337, 3663, 4059, 4477, 4551, 4961, 6327, 6897, 7011, 7733, 8569, 13431, 13653, 14883, 16687, 20691, 23199, 25707, 28823, 40293, 44649, 50061, 69597, 77121, 85063, 86469, 94259, 150183, 183557, 255189, 259407, 282777, 317053, 550671, 765567, 848331, 951159, 1652013, 2853477, 3487583, 10462749, 31388247]

約数ペア:

[(1, 31388247), (3, 10462749), (9, 3487583), (11, 2853477), (19, 1652013), (33, 951159), (37, 848331), (41, 765567), (57, 550671), (99, 317053), (111, 282777), (121, 259407), (123, 255189), (171, 183557), (209, 150183), (333, 94259), (363, 86469), (369, 85063), (407, 77121), (451, 69597), (627, 50061), (703, 44649), (779, 40293), (1089, 28823), (1221, 25707), (1353, 23199), (1517, 20691), (1881, 16687), (2109, 14883), (2299, 13653), (2337, 13431), (3663, 8569), (4059, 7733), (4477, 7011), (4551, 6897), (4961, 6327)]