128584580

素因数分解:

$2^2\times 5^1\times {\mathrm{1297}}^1\times {\mathrm{4957}}^1$

素因数の和:6263

約数の個数: 24

約数和(自身を含む): 270290328

約数和(自身を除く): 141705748

約数列:

[1, 2, 4, 5, 10, 20, 1297, 2594, 4957, 5188, 6485, 9914, 12970, 19828, 24785, 25940, 49570, 99140, 6429229, 12858458, 25716916, 32146145, 64292290, 128584580]

約数ペア:

[(1, 128584580), (2, 64292290), (4, 32146145), (5, 25716916), (10, 12858458), (20, 6429229), (1297, 99140), (2594, 49570), (4957, 25940), (5188, 24785), (6485, 19828), (9914, 12970)]