659840

素因数分解:

$2^7\times 5^1\times {\mathrm{1031}}^1$

素因数の和:1050

約数の個数: 32

約数和(自身を含む): 1578960

約数和(自身を除く): 919120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1031, 2062, 4124, 5155, 8248, 10310, 16496, 20620, 32992, 41240, 65984, 82480, 131968, 164960, 329920, 659840]

約数ペア:

[(1, 659840), (2, 329920), (4, 164960), (5, 131968), (8, 82480), (10, 65984), (16, 41240), (20, 32992), (32, 20620), (40, 16496), (64, 10310), (80, 8248), (128, 5155), (160, 4124), (320, 2062), (640, 1031)]