31122225

素因数分解:

$3^5\times 5^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:181

約数の個数: 72

約数和(自身を含む): 59579520

約数和(自身を除く): 28457295

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 47, 75, 81, 109, 135, 141, 225, 235, 243, 327, 405, 423, 545, 675, 705, 981, 1175, 1215, 1269, 1635, 2025, 2115, 2725, 2943, 3525, 3807, 4905, 5123, 6075, 6345, 8175, 8829, 10575, 11421, 14715, 15369, 19035, 24525, 25615, 26487, 31725, 44145, 46107, 57105, 73575, 76845, 95175, 128075, 132435, 138321, 220725, 230535, 285525, 384225, 414963, 662175, 691605, 1152675, 1244889, 2074815, 3458025, 6224445, 10374075, 31122225]

約数ペア:

[(1, 31122225), (3, 10374075), (5, 6224445), (9, 3458025), (15, 2074815), (25, 1244889), (27, 1152675), (45, 691605), (47, 662175), (75, 414963), (81, 384225), (109, 285525), (135, 230535), (141, 220725), (225, 138321), (235, 132435), (243, 128075), (327, 95175), (405, 76845), (423, 73575), (545, 57105), (675, 46107), (705, 44145), (981, 31725), (1175, 26487), (1215, 25615), (1269, 24525), (1635, 19035), (2025, 15369), (2115, 14715), (2725, 11421), (2943, 10575), (3525, 8829), (3807, 8175), (4905, 6345), (5123, 6075)]