990512

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{1997}}^1$

素因数の和:2036

約数の個数: 20

約数和(自身を含む): 1982016

約数和(自身を除く): 991504

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 1997, 3994, 7988, 15976, 31952, 61907, 123814, 247628, 495256, 990512]

約数ペア:

[(1, 990512), (2, 495256), (4, 247628), (8, 123814), (16, 61907), (31, 31952), (62, 15976), (124, 7988), (248, 3994), (496, 1997)]