19814840

素因数分解:

$2^3\times 5^1\times {\mathrm{495371}}^1$

素因数の和:495382

約数の個数: 16

約数和(自身を含む): 44583480

約数和(自身を除く): 24768640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 495371, 990742, 1981484, 2476855, 3962968, 4953710, 9907420, 19814840]

約数ペア:

[(1, 19814840), (2, 9907420), (4, 4953710), (5, 3962968), (8, 2476855), (10, 1981484), (20, 990742), (40, 495371)]