28039900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{977}}^1$

素因数の和:1039

約数の個数: 72

約数和(自身を含む): 71307936

約数和(自身を除く): 43268036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 41, 50, 70, 82, 100, 140, 164, 175, 205, 287, 350, 410, 574, 700, 820, 977, 1025, 1148, 1435, 1954, 2050, 2870, 3908, 4100, 4885, 5740, 6839, 7175, 9770, 13678, 14350, 19540, 24425, 27356, 28700, 34195, 40057, 48850, 68390, 80114, 97700, 136780, 160228, 170975, 200285, 280399, 341950, 400570, 560798, 683900, 801140, 1001425, 1121596, 1401995, 2002850, 2803990, 4005700, 5607980, 7009975, 14019950, 28039900]

約数ペア:

[(1, 28039900), (2, 14019950), (4, 7009975), (5, 5607980), (7, 4005700), (10, 2803990), (14, 2002850), (20, 1401995), (25, 1121596), (28, 1001425), (35, 801140), (41, 683900), (50, 560798), (70, 400570), (82, 341950), (100, 280399), (140, 200285), (164, 170975), (175, 160228), (205, 136780), (287, 97700), (350, 80114), (410, 68390), (574, 48850), (700, 40057), (820, 34195), (977, 28700), (1025, 27356), (1148, 24425), (1435, 19540), (1954, 14350), (2050, 13678), (2870, 9770), (3908, 7175), (4100, 6839), (4885, 5740)]