19502480

素因数分解:

$2^4\times 5^1\times {\mathrm{243781}}^1$

素因数の和:243794

約数の個数: 20

約数和(自身を含む): 45343452

約数和(自身を除く): 25840972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243781, 487562, 975124, 1218905, 1950248, 2437810, 3900496, 4875620, 9751240, 19502480]

約数ペア:

[(1, 19502480), (2, 9751240), (4, 4875620), (5, 3900496), (8, 2437810), (10, 1950248), (16, 1218905), (20, 975124), (40, 487562), (80, 243781)]