20455432840

素因数分解:

$2^3\times 5^1\times {\mathrm{919}}^1\times {\mathrm{556459}}^1$

素因数の和:557389

約数の個数: 32

約数和(自身を含む): 46074888000

約数和(自身を除く): 25619455160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 919, 1838, 3676, 4595, 7352, 9190, 18380, 36760, 556459, 1112918, 2225836, 2782295, 4451672, 5564590, 11129180, 22258360, 511385821, 1022771642, 2045543284, 2556929105, 4091086568, 5113858210, 10227716420, 20455432840]

約数ペア:

[(1, 20455432840), (2, 10227716420), (4, 5113858210), (5, 4091086568), (8, 2556929105), (10, 2045543284), (20, 1022771642), (40, 511385821), (919, 22258360), (1838, 11129180), (3676, 5564590), (4595, 4451672), (7352, 2782295), (9190, 2225836), (18380, 1112918), (36760, 556459)]