19942540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23189}}^1$

素因数の和:23241

約数の個数: 24

約数和(自身を含む): 42855120

約数和(自身を除く): 22912580

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23189, 46378, 92756, 115945, 231890, 463780, 997127, 1994254, 3988508, 4985635, 9971270, 19942540]

約数ペア:

[(1, 19942540), (2, 9971270), (4, 4985635), (5, 3988508), (10, 1994254), (20, 997127), (43, 463780), (86, 231890), (172, 115945), (215, 92756), (430, 46378), (860, 23189)]