20852560

素因数分解:

$2^4\times 5^1\times {\mathrm{277}}^1\times {\mathrm{941}}^1$

素因数の和:1231

約数の個数: 40

約数和(自身を含む): 48708936

約数和(自身を除く): 27856376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 277, 554, 941, 1108, 1385, 1882, 2216, 2770, 3764, 4432, 4705, 5540, 7528, 9410, 11080, 15056, 18820, 22160, 37640, 75280, 260657, 521314, 1042628, 1303285, 2085256, 2606570, 4170512, 5213140, 10426280, 20852560]

約数ペア:

[(1, 20852560), (2, 10426280), (4, 5213140), (5, 4170512), (8, 2606570), (10, 2085256), (16, 1303285), (20, 1042628), (40, 521314), (80, 260657), (277, 75280), (554, 37640), (941, 22160), (1108, 18820), (1385, 15056), (1882, 11080), (2216, 9410), (2770, 7528), (3764, 5540), (4432, 4705)]