18974780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{86249}}^1$

素因数の和:86269

約数の個数: 24

約数和(自身を含む): 43470000

約数和(自身を除く): 24495220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 86249, 172498, 344996, 431245, 862490, 948739, 1724980, 1897478, 3794956, 4743695, 9487390, 18974780]

約数ペア:

[(1, 18974780), (2, 9487390), (4, 4743695), (5, 3794956), (10, 1897478), (11, 1724980), (20, 948739), (22, 862490), (44, 431245), (55, 344996), (110, 172498), (220, 86249)]