20312560

素因数分解:

$2^4\times 5^1\times {\mathrm{253907}}^1$

素因数の和:253920

約数の個数: 20

約数和(自身を含む): 47226888

約数和(自身を除く): 26914328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253907, 507814, 1015628, 1269535, 2031256, 2539070, 4062512, 5078140, 10156280, 20312560]

約数ペア:

[(1, 20312560), (2, 10156280), (4, 5078140), (5, 4062512), (8, 2539070), (10, 2031256), (16, 1269535), (20, 1015628), (40, 507814), (80, 253907)]