20805772

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8513}}^1$

素因数の和:8577

約数の個数: 24

約数和(自身を含む): 40049856

約数和(自身を除く): 19244084

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8513, 17026, 34052, 110669, 221338, 400111, 442676, 800222, 1600444, 5201443, 10402886, 20805772]

約数ペア:

[(1, 20805772), (2, 10402886), (4, 5201443), (13, 1600444), (26, 800222), (47, 442676), (52, 400111), (94, 221338), (188, 110669), (611, 34052), (1222, 17026), (2444, 8513)]