20171025

素因数分解:

$3^4\times 5^2\times 7^1\times {\mathrm{1423}}^1$

素因数の和:1452

約数の個数: 60

約数和(自身を含む): 42731392

約数和(自身を除く): 22560367

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 135, 175, 189, 225, 315, 405, 525, 567, 675, 945, 1423, 1575, 2025, 2835, 4269, 4725, 7115, 9961, 12807, 14175, 21345, 29883, 35575, 38421, 49805, 64035, 89649, 106725, 115263, 149415, 192105, 249025, 268947, 320175, 448245, 576315, 747075, 806841, 960525, 1344735, 2241225, 2881575, 4034205, 6723675, 20171025]

約数ペア:

[(1, 20171025), (3, 6723675), (5, 4034205), (7, 2881575), (9, 2241225), (15, 1344735), (21, 960525), (25, 806841), (27, 747075), (35, 576315), (45, 448245), (63, 320175), (75, 268947), (81, 249025), (105, 192105), (135, 149415), (175, 115263), (189, 106725), (225, 89649), (315, 64035), (405, 49805), (525, 38421), (567, 35575), (675, 29883), (945, 21345), (1423, 14175), (1575, 12807), (2025, 9961), (2835, 7115), (4269, 4725)]