20179876878

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{322249}}^1$

素因数の和:322342

約数の個数: 72

約数和(自身を含む): 51578046000

約数和(自身を除く): 31398169122

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 71, 98, 126, 142, 147, 213, 294, 426, 441, 497, 639, 882, 994, 1278, 1491, 2982, 3479, 4473, 6958, 8946, 10437, 20874, 31311, 62622, 322249, 644498, 966747, 1933494, 2255743, 2900241, 4511486, 5800482, 6767229, 13534458, 15790201, 20301687, 22879679, 31580402, 40603374, 45759358, 47370603, 68639037, 94741206, 137278074, 142111809, 160157753, 205917111, 284223618, 320315506, 411834222, 480473259, 960946518, 1121104271, 1441419777, 2242208542, 2882839554, 3363312813, 6726625626, 10089938439, 20179876878]

約数ペア:

[(1, 20179876878), (2, 10089938439), (3, 6726625626), (6, 3363312813), (7, 2882839554), (9, 2242208542), (14, 1441419777), (18, 1121104271), (21, 960946518), (42, 480473259), (49, 411834222), (63, 320315506), (71, 284223618), (98, 205917111), (126, 160157753), (142, 142111809), (147, 137278074), (213, 94741206), (294, 68639037), (426, 47370603), (441, 45759358), (497, 40603374), (639, 31580402), (882, 22879679), (994, 20301687), (1278, 15790201), (1491, 13534458), (2982, 6767229), (3479, 5800482), (4473, 4511486), (6958, 2900241), (8946, 2255743), (10437, 1933494), (20874, 966747), (31311, 644498), (62622, 322249)]