21008545490

素因数分解:

$2^1\times 5^1\times {\mathrm{21191}}^1\times {\mathrm{99139}}^1$

素因数の和:120337

約数の個数: 16

約数和(自身を含む): 37817547840

約数和(自身を除く): 16809002350

約数列:

[1, 2, 5, 10, 21191, 42382, 99139, 105955, 198278, 211910, 495695, 991390, 2100854549, 4201709098, 10504272745, 21008545490]

約数ペア:

[(1, 21008545490), (2, 10504272745), (5, 4201709098), (10, 2100854549), (21191, 991390), (42382, 495695), (99139, 211910), (105955, 198278)]