21036560

素因数分解:

$2^4\times 5^1\times {\mathrm{262957}}^1$

素因数の和:262970

約数の個数: 20

約数和(自身を含む): 48910188

約数和(自身を除く): 27873628

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262957, 525914, 1051828, 1314785, 2103656, 2629570, 4207312, 5259140, 10518280, 21036560]

約数ペア:

[(1, 21036560), (2, 10518280), (4, 5259140), (5, 4207312), (8, 2629570), (10, 2103656), (16, 1314785), (20, 1051828), (40, 525914), (80, 262957)]