68780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1$

素因数の和:209

約数の個数: 24

約数和(自身を含む): 152880

約数和(自身を除く): 84100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 181, 190, 362, 380, 724, 905, 1810, 3439, 3620, 6878, 13756, 17195, 34390, 68780]

約数ペア:

[(1, 68780), (2, 34390), (4, 17195), (5, 13756), (10, 6878), (19, 3620), (20, 3439), (38, 1810), (76, 905), (95, 724), (181, 380), (190, 362)]