990128

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{3257}}^1$

素因数の和:3284

約数の個数: 20

約数和(自身を含む): 2019960

約数和(自身を除く): 1029832

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 3257, 6514, 13028, 26056, 52112, 61883, 123766, 247532, 495064, 990128]

約数ペア:

[(1, 990128), (2, 495064), (4, 247532), (8, 123766), (16, 61883), (19, 52112), (38, 26056), (76, 13028), (152, 6514), (304, 3257)]