19464080

素因数分解:

$2^4\times 5^1\times {\mathrm{243301}}^1$

素因数の和:243314

約数の個数: 20

約数和(自身を含む): 45254172

約数和(自身を除く): 25790092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243301, 486602, 973204, 1216505, 1946408, 2433010, 3892816, 4866020, 9732040, 19464080]

約数ペア:

[(1, 19464080), (2, 9732040), (4, 4866020), (5, 3892816), (8, 2433010), (10, 1946408), (16, 1216505), (20, 973204), (40, 486602), (80, 243301)]