9900980

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3779}}^1$

素因数の和:3919

約数の個数: 24

約数和(自身を含む): 20956320

約数和(自身を除く): 11055340

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 3779, 7558, 15116, 18895, 37790, 75580, 495049, 990098, 1980196, 2475245, 4950490, 9900980]

約数ペア:

[(1, 9900980), (2, 4950490), (4, 2475245), (5, 1980196), (10, 990098), (20, 495049), (131, 75580), (262, 37790), (524, 18895), (655, 15116), (1310, 7558), (2620, 3779)]