21291550

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{479}}^1$

素因数の和:625

約数の個数: 48

約数和(自身を含む): 45711360

約数和(自身を除く): 24419810

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 127, 175, 254, 350, 479, 635, 889, 958, 1270, 1778, 2395, 3175, 3353, 4445, 4790, 6350, 6706, 8890, 11975, 16765, 22225, 23950, 33530, 44450, 60833, 83825, 121666, 167650, 304165, 425831, 608330, 851662, 1520825, 2129155, 3041650, 4258310, 10645775, 21291550]

約数ペア:

[(1, 21291550), (2, 10645775), (5, 4258310), (7, 3041650), (10, 2129155), (14, 1520825), (25, 851662), (35, 608330), (50, 425831), (70, 304165), (127, 167650), (175, 121666), (254, 83825), (350, 60833), (479, 44450), (635, 33530), (889, 23950), (958, 22225), (1270, 16765), (1778, 11975), (2395, 8890), (3175, 6706), (3353, 6350), (4445, 4790)]