81860863

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:395

約数の個数: 24

約数和(自身を含む): 99268224

約数和(自身を除く): 17407361

約数列:

[1, 7, 31, 43, 217, 283, 301, 961, 1333, 1981, 6727, 8773, 9331, 12169, 41323, 61411, 85183, 271963, 289261, 377239, 1903741, 2640673, 11694409, 81860863]

約数ペア:

[(1, 81860863), (7, 11694409), (31, 2640673), (43, 1903741), (217, 377239), (283, 289261), (301, 271963), (961, 85183), (1333, 61411), (1981, 41323), (6727, 12169), (8773, 9331)]