19828053

素因数分解:

$3^2\times 7^1\times {\mathrm{491}}^1\times {\mathrm{641}}^1$

素因数の和:1145

約数の個数: 24

約数和(自身を含む): 32849856

約数和(自身を除く): 13021803

約数列:

[1, 3, 7, 9, 21, 63, 491, 641, 1473, 1923, 3437, 4419, 4487, 5769, 10311, 13461, 30933, 40383, 314731, 944193, 2203117, 2832579, 6609351, 19828053]

約数ペア:

[(1, 19828053), (3, 6609351), (7, 2832579), (9, 2203117), (21, 944193), (63, 314731), (491, 40383), (641, 30933), (1473, 13461), (1923, 10311), (3437, 5769), (4419, 4487)]