21082156

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{181}}^1\times {\mathrm{787}}^1$

素因数の和:1009

約数の個数: 24

約数和(自身を含む): 38148656

約数和(自身を除く): 17066500

約数列:

[1, 2, 4, 37, 74, 148, 181, 362, 724, 787, 1574, 3148, 6697, 13394, 26788, 29119, 58238, 116476, 142447, 284894, 569788, 5270539, 10541078, 21082156]

約数ペア:

[(1, 21082156), (2, 10541078), (4, 5270539), (37, 569788), (74, 284894), (148, 142447), (181, 116476), (362, 58238), (724, 29119), (787, 26788), (1574, 13394), (3148, 6697)]