19429040

素因数分解:

$2^4\times 5^1\times {\mathrm{242863}}^1$

素因数の和:242876

約数の個数: 20

約数和(自身を含む): 45172704

約数和(自身を除く): 25743664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242863, 485726, 971452, 1214315, 1942904, 2428630, 3885808, 4857260, 9714520, 19429040]

約数ペア:

[(1, 19429040), (2, 9714520), (4, 4857260), (5, 3885808), (8, 2428630), (10, 1942904), (16, 1214315), (20, 971452), (40, 485726), (80, 242863)]