18778847810

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21099829}}^1$

素因数の和:21099925

約数の個数: 16

約数和(自身を含む): 34181724600

約数和(自身を除く): 15402876790

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 21099829, 42199658, 105499145, 210998290, 1877884781, 3755769562, 9389423905, 18778847810]

約数ペア:

[(1, 18778847810), (2, 9389423905), (5, 3755769562), (10, 1877884781), (89, 210998290), (178, 105499145), (445, 42199658), (890, 21099829)]