20545556

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{199}}^1\times {\mathrm{487}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 36892800

約数和(自身を除く): 16347244

約数列:

[1, 2, 4, 53, 106, 199, 212, 398, 487, 796, 974, 1948, 10547, 21094, 25811, 42188, 51622, 96913, 103244, 193826, 387652, 5136389, 10272778, 20545556]

約数ペア:

[(1, 20545556), (2, 10272778), (4, 5136389), (53, 387652), (106, 193826), (199, 103244), (212, 96913), (398, 51622), (487, 42188), (796, 25811), (974, 21094), (1948, 10547)]