19878908

素因数分解:

$2^2\times 7^3\times {\mathrm{14489}}^1$

素因数の和:14514

約数の個数: 24

約数和(自身を含む): 40572000

約数和(自身を除く): 20693092

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372, 14489, 28978, 57956, 101423, 202846, 405692, 709961, 1419922, 2839844, 4969727, 9939454, 19878908]

約数ペア:

[(1, 19878908), (2, 9939454), (4, 4969727), (7, 2839844), (14, 1419922), (28, 709961), (49, 405692), (98, 202846), (196, 101423), (343, 57956), (686, 28978), (1372, 14489)]