20280106

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 21191894

約数列:

[1, 2, 7, 11, 14, 19, 22, 29, 38, 58, 77, 133, 154, 203, 209, 239, 266, 319, 406, 418, 478, 551, 638, 1102, 1463, 1673, 2233, 2629, 2926, 3346, 3857, 4466, 4541, 5258, 6061, 6931, 7714, 9082, 12122, 13862, 18403, 31787, 36806, 42427, 48517, 49951, 63574, 76241, 84854, 97034, 99902, 131689, 152482, 263378, 349657, 533687, 699314, 921823, 1067374, 1448579, 1843646, 2897158, 10140053, 20280106]

約数ペア:

[(1, 20280106), (2, 10140053), (7, 2897158), (11, 1843646), (14, 1448579), (19, 1067374), (22, 921823), (29, 699314), (38, 533687), (58, 349657), (77, 263378), (133, 152482), (154, 131689), (203, 99902), (209, 97034), (239, 84854), (266, 76241), (319, 63574), (406, 49951), (418, 48517), (478, 42427), (551, 36806), (638, 31787), (1102, 18403), (1463, 13862), (1673, 12122), (2233, 9082), (2629, 7714), (2926, 6931), (3346, 6061), (3857, 5258), (4466, 4541)]