216720387

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{173}}^1$

素因数の和:321

約数の個数: 64

約数和(自身を含む): 360138240

約数和(自身を除く): 143417853

約数列:

[1, 3, 9, 13, 27, 39, 43, 83, 117, 129, 173, 249, 351, 387, 519, 559, 747, 1079, 1161, 1557, 1677, 2241, 2249, 3237, 3569, 4671, 5031, 6747, 7439, 9711, 10707, 14359, 15093, 20241, 22317, 29133, 32121, 43077, 46397, 60723, 66951, 96363, 96707, 129231, 139191, 186667, 200853, 290121, 387693, 417573, 560001, 617437, 870363, 1252719, 1680003, 1852311, 2611089, 5040009, 5556933, 8026681, 16670799, 24080043, 72240129, 216720387]

約数ペア:

[(1, 216720387), (3, 72240129), (9, 24080043), (13, 16670799), (27, 8026681), (39, 5556933), (43, 5040009), (83, 2611089), (117, 1852311), (129, 1680003), (173, 1252719), (249, 870363), (351, 617437), (387, 560001), (519, 417573), (559, 387693), (747, 290121), (1079, 200853), (1161, 186667), (1557, 139191), (1677, 129231), (2241, 96707), (2249, 96363), (3237, 66951), (3569, 60723), (4671, 46397), (5031, 43077), (6747, 32121), (7439, 29133), (9711, 22317), (10707, 20241), (14359, 15093)]