18859725

素因数分解:

$3^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{769}}^1$

素因数の和:894

約数の個数: 36

約数和(自身を含む): 34134100

約数和(自身を除く): 15274375

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 109, 225, 327, 545, 769, 981, 1635, 2307, 2725, 3845, 4905, 6921, 8175, 11535, 19225, 24525, 34605, 57675, 83821, 173025, 251463, 419105, 754389, 1257315, 2095525, 3771945, 6286575, 18859725]

約数ペア:

[(1, 18859725), (3, 6286575), (5, 3771945), (9, 2095525), (15, 1257315), (25, 754389), (45, 419105), (75, 251463), (109, 173025), (225, 83821), (327, 57675), (545, 34605), (769, 24525), (981, 19225), (1635, 11535), (2307, 8175), (2725, 6921), (3845, 4905)]