21640088

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{142369}}^1$

素因数の和:142394

約数の個数: 16

約数和(自身を含む): 42711000

約数和(自身を除く): 21070912

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 142369, 284738, 569476, 1138952, 2705011, 5410022, 10820044, 21640088]

約数ペア:

[(1, 21640088), (2, 10820044), (4, 5410022), (8, 2705011), (19, 1138952), (38, 569476), (76, 284738), (152, 142369)]