28104640

素因数分解:

$2^6\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1237}}^1$

素因数の和:1325

約数の個数: 56

約数和(自身を含む): 67921632

約数和(自身を除く): 39816992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 142, 160, 284, 320, 355, 568, 710, 1136, 1237, 1420, 2272, 2474, 2840, 4544, 4948, 5680, 6185, 9896, 11360, 12370, 19792, 22720, 24740, 39584, 49480, 79168, 87827, 98960, 175654, 197920, 351308, 395840, 439135, 702616, 878270, 1405232, 1756540, 2810464, 3513080, 5620928, 7026160, 14052320, 28104640]

約数ペア:

[(1, 28104640), (2, 14052320), (4, 7026160), (5, 5620928), (8, 3513080), (10, 2810464), (16, 1756540), (20, 1405232), (32, 878270), (40, 702616), (64, 439135), (71, 395840), (80, 351308), (142, 197920), (160, 175654), (284, 98960), (320, 87827), (355, 79168), (568, 49480), (710, 39584), (1136, 24740), (1237, 22720), (1420, 19792), (2272, 12370), (2474, 11360), (2840, 9896), (4544, 6185), (4948, 5680)]