28212560

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4967}}^1$

素因数の和:5051

約数の個数: 40

約数和(自身を含む): 66531456

約数和(自身を除く): 38318896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 4967, 5680, 9934, 19868, 24835, 39736, 49670, 79472, 99340, 198680, 352657, 397360, 705314, 1410628, 1763285, 2821256, 3526570, 5642512, 7053140, 14106280, 28212560]

約数ペア:

[(1, 28212560), (2, 14106280), (4, 7053140), (5, 5642512), (8, 3526570), (10, 2821256), (16, 1763285), (20, 1410628), (40, 705314), (71, 397360), (80, 352657), (142, 198680), (284, 99340), (355, 79472), (568, 49670), (710, 39736), (1136, 24835), (1420, 19868), (2840, 9934), (4967, 5680)]