64660780

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{25457}}^1$

素因数の和:25593

約数の個数: 24

約数和(自身を含む): 136862208

約数和(自身を除く): 72201428

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 25457, 50914, 101828, 127285, 254570, 509140, 3233039, 6466078, 12932156, 16165195, 32330390, 64660780]

約数ペア:

[(1, 64660780), (2, 32330390), (4, 16165195), (5, 12932156), (10, 6466078), (20, 3233039), (127, 509140), (254, 254570), (508, 127285), (635, 101828), (1270, 50914), (2540, 25457)]