20257825

素因数分解:

$5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{719}}^1$

素因数の和:766

約数の個数: 36

約数和(自身を含む): 30533760

約数和(自身を除く): 10275935

約数列:

[1, 5, 7, 23, 25, 35, 49, 115, 161, 175, 245, 575, 719, 805, 1127, 1225, 3595, 4025, 5033, 5635, 16537, 17975, 25165, 28175, 35231, 82685, 115759, 125825, 176155, 413425, 578795, 810313, 880775, 2893975, 4051565, 20257825]

約数ペア:

[(1, 20257825), (5, 4051565), (7, 2893975), (23, 880775), (25, 810313), (35, 578795), (49, 413425), (115, 176155), (161, 125825), (175, 115759), (245, 82685), (575, 35231), (719, 28175), (805, 25165), (1127, 17975), (1225, 16537), (3595, 5635), (4025, 5033)]