20974820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14771}}^1$

素因数の和:14851

約数の個数: 24

約数和(自身を含む): 44670528

約数和(自身を除く): 23695708

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14771, 29542, 59084, 73855, 147710, 295420, 1048741, 2097482, 4194964, 5243705, 10487410, 20974820]

約数ペア:

[(1, 20974820), (2, 10487410), (4, 5243705), (5, 4194964), (10, 2097482), (20, 1048741), (71, 295420), (142, 147710), (284, 73855), (355, 59084), (710, 29542), (1420, 14771)]