19885995

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{239}}^1$

素因数の和:336

約数の個数: 36

約数和(自身を含む): 35436960

約数和(自身を除く): 15550965

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 239, 387, 645, 717, 1195, 1849, 1935, 2151, 3585, 5547, 9245, 10277, 10755, 16641, 27735, 30831, 51385, 83205, 92493, 154155, 441911, 462465, 1325733, 2209555, 3977199, 6628665, 19885995]

約数ペア:

[(1, 19885995), (3, 6628665), (5, 3977199), (9, 2209555), (15, 1325733), (43, 462465), (45, 441911), (129, 154155), (215, 92493), (239, 83205), (387, 51385), (645, 30831), (717, 27735), (1195, 16641), (1849, 10755), (1935, 10277), (2151, 9245), (3585, 5547)]