20520560

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1433}}^1$

素因数の和:1625

約数の個数: 40

約数和(自身を含む): 48010320

約数和(自身を除く): 27489760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1432, 1433, 1790, 2864, 2866, 3580, 5732, 7160, 7165, 11464, 14320, 14330, 22928, 28660, 57320, 114640, 256507, 513014, 1026028, 1282535, 2052056, 2565070, 4104112, 5130140, 10260280, 20520560]

約数ペア:

[(1, 20520560), (2, 10260280), (4, 5130140), (5, 4104112), (8, 2565070), (10, 2052056), (16, 1282535), (20, 1026028), (40, 513014), (80, 256507), (179, 114640), (358, 57320), (716, 28660), (895, 22928), (1432, 14330), (1433, 14320), (1790, 11464), (2864, 7165), (2866, 7160), (3580, 5732)]