720209560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{4937}}^1$

素因数の和:5476

約数の個数: 64

約数和(自身を含む): 1855897920

約数和(自身を除く): 1135688360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 521, 1042, 2084, 2605, 3647, 4168, 4937, 5210, 7294, 9874, 10420, 14588, 18235, 19748, 20840, 24685, 29176, 34559, 36470, 39496, 49370, 69118, 72940, 98740, 138236, 145880, 172795, 197480, 276472, 345590, 691180, 1382360, 2572177, 5144354, 10288708, 12860885, 18005239, 20577416, 25721770, 36010478, 51443540, 72020956, 90026195, 102887080, 144041912, 180052390, 360104780, 720209560]

約数ペア:

[(1, 720209560), (2, 360104780), (4, 180052390), (5, 144041912), (7, 102887080), (8, 90026195), (10, 72020956), (14, 51443540), (20, 36010478), (28, 25721770), (35, 20577416), (40, 18005239), (56, 12860885), (70, 10288708), (140, 5144354), (280, 2572177), (521, 1382360), (1042, 691180), (2084, 345590), (2605, 276472), (3647, 197480), (4168, 172795), (4937, 145880), (5210, 138236), (7294, 98740), (9874, 72940), (10420, 69118), (14588, 49370), (18235, 39496), (19748, 36470), (20840, 34559), (24685, 29176)]