20994844

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{1571}}^1$

素因数の和:1845

約数の個数: 24

約数和(自身を含む): 39746448

約数和(自身を除く): 18751604

約数列:

[1, 2, 4, 13, 26, 52, 257, 514, 1028, 1571, 3142, 3341, 6284, 6682, 13364, 20423, 40846, 81692, 403747, 807494, 1614988, 5248711, 10497422, 20994844]

約数ペア:

[(1, 20994844), (2, 10497422), (4, 5248711), (13, 1614988), (26, 807494), (52, 403747), (257, 81692), (514, 40846), (1028, 20423), (1571, 13364), (3142, 6682), (3341, 6284)]