1296005420

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1\times {\mathrm{1499}}^1$

素因数の和:1958

約数の個数: 48

約数和(自身を含む): 2751840000

約数和(自身を除く): 1455834580

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 311, 556, 622, 695, 1244, 1390, 1499, 1555, 2780, 2998, 3110, 5996, 6220, 7495, 14990, 29980, 43229, 86458, 172916, 208361, 216145, 416722, 432290, 466189, 833444, 864580, 932378, 1041805, 1864756, 2083610, 2330945, 4167220, 4661890, 9323780, 64800271, 129600542, 259201084, 324001355, 648002710, 1296005420]

約数ペア:

[(1, 1296005420), (2, 648002710), (4, 324001355), (5, 259201084), (10, 129600542), (20, 64800271), (139, 9323780), (278, 4661890), (311, 4167220), (556, 2330945), (622, 2083610), (695, 1864756), (1244, 1041805), (1390, 932378), (1499, 864580), (1555, 833444), (2780, 466189), (2998, 432290), (3110, 416722), (5996, 216145), (6220, 208361), (7495, 172916), (14990, 86458), (29980, 43229)]