664960

素因数分解:

$2^7\times 5^1\times {\mathrm{1039}}^1$

素因数の和:1058

約数の個数: 32

約数和(自身を含む): 1591200

約数和(自身を除く): 926240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1039, 2078, 4156, 5195, 8312, 10390, 16624, 20780, 33248, 41560, 66496, 83120, 132992, 166240, 332480, 664960]

約数ペア:

[(1, 664960), (2, 332480), (4, 166240), (5, 132992), (8, 83120), (10, 66496), (16, 41560), (20, 33248), (32, 20780), (40, 16624), (64, 10390), (80, 8312), (128, 5195), (160, 4156), (320, 2078), (640, 1039)]