20488140

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12647}}^1$

素因数の和:12668

約数の個数: 60

約数和(自身を含む): 64277136

約数和(自身を除く): 43788996

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12647, 25294, 37941, 50588, 63235, 75882, 113823, 126470, 151764, 189705, 227646, 252940, 341469, 379410, 455292, 569115, 682938, 758820, 1024407, 1138230, 1365876, 1707345, 2048814, 2276460, 3414690, 4097628, 5122035, 6829380, 10244070, 20488140]

約数ペア:

[(1, 20488140), (2, 10244070), (3, 6829380), (4, 5122035), (5, 4097628), (6, 3414690), (9, 2276460), (10, 2048814), (12, 1707345), (15, 1365876), (18, 1138230), (20, 1024407), (27, 758820), (30, 682938), (36, 569115), (45, 455292), (54, 379410), (60, 341469), (81, 252940), (90, 227646), (108, 189705), (135, 151764), (162, 126470), (180, 113823), (270, 75882), (324, 63235), (405, 50588), (540, 37941), (810, 25294), (1620, 12647)]