20839790

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{7211}}^1$

素因数の和:7252

約数の個数: 24

約数和(自身を含む): 39853512

約数和(自身を除く): 19013722

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 289, 578, 1445, 2890, 7211, 14422, 36055, 72110, 122587, 245174, 612935, 1225870, 2083979, 4167958, 10419895, 20839790]

約数ペア:

[(1, 20839790), (2, 10419895), (5, 4167958), (10, 2083979), (17, 1225870), (34, 612935), (85, 245174), (170, 122587), (289, 72110), (578, 36055), (1445, 14422), (2890, 7211)]