21011518

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{6871}}^1$

素因数の和:7023

約数の個数: 16

約数和(自身を含む): 34634880

約数和(自身を除く): 13623362

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 6871, 13742, 75581, 151162, 955069, 1910138, 10505759, 21011518]

約数ペア:

[(1, 21011518), (2, 10505759), (11, 1910138), (22, 955069), (139, 151162), (278, 75581), (1529, 13742), (3058, 6871)]