289280

素因数分解:

$2^9\times 5^1\times {\mathrm{113}}^1$

素因数の和:136

約数の個数: 40

約数和(自身を含む): 699732

約数和(自身を除く): 410452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 113, 128, 160, 226, 256, 320, 452, 512, 565, 640, 904, 1130, 1280, 1808, 2260, 2560, 3616, 4520, 7232, 9040, 14464, 18080, 28928, 36160, 57856, 72320, 144640, 289280]

約数ペア:

[(1, 289280), (2, 144640), (4, 72320), (5, 57856), (8, 36160), (10, 28928), (16, 18080), (20, 14464), (32, 9040), (40, 7232), (64, 4520), (80, 3616), (113, 2560), (128, 2260), (160, 1808), (226, 1280), (256, 1130), (320, 904), (452, 640), (512, 565)]