18790420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{85411}}^1$

素因数の和:85431

約数の個数: 24

約数和(自身を含む): 43047648

約数和(自身を除く): 24257228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 85411, 170822, 341644, 427055, 854110, 939521, 1708220, 1879042, 3758084, 4697605, 9395210, 18790420]

約数ペア:

[(1, 18790420), (2, 9395210), (4, 4697605), (5, 3758084), (10, 1879042), (11, 1708220), (20, 939521), (22, 854110), (44, 427055), (55, 341644), (110, 170822), (220, 85411)]