21720584

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{87583}}^1$

素因数の和:87620

約数の個数: 16

約数和(自身を含む): 42040320

約数和(自身を除く): 20319736

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 87583, 175166, 350332, 700664, 2715073, 5430146, 10860292, 21720584]

約数ペア:

[(1, 21720584), (2, 10860292), (4, 5430146), (8, 2715073), (31, 700664), (62, 350332), (124, 175166), (248, 87583)]