18080425

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:214

約数の個数: 36

約数和(自身を含む): 25397680

約数和(自身を除く): 7317255

約数列:

[1, 5, 11, 25, 43, 55, 121, 139, 215, 275, 473, 605, 695, 1075, 1529, 2365, 3025, 3475, 5203, 5977, 7645, 11825, 16819, 26015, 29885, 38225, 65747, 84095, 130075, 149425, 328735, 420475, 723217, 1643675, 3616085, 18080425]

約数ペア:

[(1, 18080425), (5, 3616085), (11, 1643675), (25, 723217), (43, 420475), (55, 328735), (121, 149425), (139, 130075), (215, 84095), (275, 65747), (473, 38225), (605, 29885), (695, 26015), (1075, 16819), (1529, 11825), (2365, 7645), (3025, 5977), (3475, 5203)]