21598276

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{7489}}^1$

素因数の和:7603

約数の個数: 24

約数和(自身を含む): 43621760

約数和(自身を除く): 22023484

約数列:

[1, 2, 4, 7, 14, 28, 103, 206, 412, 721, 1442, 2884, 7489, 14978, 29956, 52423, 104846, 209692, 771367, 1542734, 3085468, 5399569, 10799138, 21598276]

約数ペア:

[(1, 21598276), (2, 10799138), (4, 5399569), (7, 3085468), (14, 1542734), (28, 771367), (103, 209692), (206, 104846), (412, 52423), (721, 29956), (1442, 14978), (2884, 7489)]