268780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1$

素因数の和:249

約数の個数: 24

約数和(自身を含む): 574560

約数和(自身を除く): 305780

約数列:

[1, 2, 4, 5, 10, 20, 89, 151, 178, 302, 356, 445, 604, 755, 890, 1510, 1780, 3020, 13439, 26878, 53756, 67195, 134390, 268780]

約数ペア:

[(1, 268780), (2, 134390), (4, 67195), (5, 53756), (10, 26878), (20, 13439), (89, 3020), (151, 1780), (178, 1510), (302, 890), (356, 755), (445, 604)]