205130709

素因数分解:

$3^2\times 7^2\times {\mathrm{461}}^1\times {\mathrm{1009}}^1$

素因数の和:1490

約数の個数: 36

約数和(自身を含む): 345765420

約数和(自身を除く): 140634711

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 461, 1009, 1383, 3027, 3227, 4149, 7063, 9081, 9681, 21189, 22589, 29043, 49441, 63567, 67767, 148323, 203301, 444969, 465149, 1395447, 3256043, 4186341, 9768129, 22792301, 29304387, 68376903, 205130709]

約数ペア:

[(1, 205130709), (3, 68376903), (7, 29304387), (9, 22792301), (21, 9768129), (49, 4186341), (63, 3256043), (147, 1395447), (441, 465149), (461, 444969), (1009, 203301), (1383, 148323), (3027, 67767), (3227, 63567), (4149, 49441), (7063, 29043), (9081, 22589), (9681, 21189)]