18807866

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 36443520

約数和(自身を除く): 17635654

約数列:

[1, 2, 7, 11, 14, 22, 49, 73, 77, 98, 146, 154, 239, 478, 511, 539, 803, 1022, 1078, 1606, 1673, 2629, 3346, 3577, 5258, 5621, 7154, 11242, 11711, 17447, 18403, 23422, 34894, 36806, 39347, 78694, 122129, 128821, 191917, 244258, 257642, 383834, 854903, 1343419, 1709806, 2686838, 9403933, 18807866]

約数ペア:

[(1, 18807866), (2, 9403933), (7, 2686838), (11, 1709806), (14, 1343419), (22, 854903), (49, 383834), (73, 257642), (77, 244258), (98, 191917), (146, 128821), (154, 122129), (239, 78694), (478, 39347), (511, 36806), (539, 34894), (803, 23422), (1022, 18403), (1078, 17447), (1606, 11711), (1673, 11242), (2629, 7154), (3346, 5621), (3577, 5258)]