21199080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25237}}^1$

素因数の和:25258

約数の個数: 64

約数和(自身を含む): 72685440

約数和(自身を除く): 51486360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25237, 50474, 75711, 100948, 126185, 151422, 176659, 201896, 252370, 302844, 353318, 378555, 504740, 529977, 605688, 706636, 757110, 883295, 1009480, 1059954, 1413272, 1514220, 1766590, 2119908, 2649885, 3028440, 3533180, 4239816, 5299770, 7066360, 10599540, 21199080]

約数ペア:

[(1, 21199080), (2, 10599540), (3, 7066360), (4, 5299770), (5, 4239816), (6, 3533180), (7, 3028440), (8, 2649885), (10, 2119908), (12, 1766590), (14, 1514220), (15, 1413272), (20, 1059954), (21, 1009480), (24, 883295), (28, 757110), (30, 706636), (35, 605688), (40, 529977), (42, 504740), (56, 378555), (60, 353318), (70, 302844), (84, 252370), (105, 201896), (120, 176659), (140, 151422), (168, 126185), (210, 100948), (280, 75711), (420, 50474), (840, 25237)]