20561805

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41539}}^1$

素因数の和:41561

約数の個数: 24

約数和(自身を含む): 38881440

約数和(自身を除く): 18319635

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 41539, 124617, 207695, 373851, 456929, 623085, 1370787, 1869255, 2284645, 4112361, 6853935, 20561805]

約数ペア:

[(1, 20561805), (3, 6853935), (5, 4112361), (9, 2284645), (11, 1869255), (15, 1370787), (33, 623085), (45, 456929), (55, 373851), (99, 207695), (165, 124617), (495, 41539)]