131265920

素因数分解:

$2^7\times 5^1\times {\mathrm{205103}}^1$

素因数の和:205122

約数の個数: 32

約数和(自身を含む): 313809120

約数和(自身を除く): 182543200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 205103, 410206, 820412, 1025515, 1640824, 2051030, 3281648, 4102060, 6563296, 8204120, 13126592, 16408240, 26253184, 32816480, 65632960, 131265920]

約数ペア:

[(1, 131265920), (2, 65632960), (4, 32816480), (5, 26253184), (8, 16408240), (10, 13126592), (16, 8204120), (20, 6563296), (32, 4102060), (40, 3281648), (64, 2051030), (80, 1640824), (128, 1025515), (160, 820412), (320, 410206), (640, 205103)]