19988378

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{3469}}^1$

素因数の和:3581

約数の個数: 16

約数和(自身を含む): 31146720

約数和(自身を除く): 11158342

約数列:

[1, 2, 43, 67, 86, 134, 2881, 3469, 5762, 6938, 149167, 232423, 298334, 464846, 9994189, 19988378]

約数ペア:

[(1, 19988378), (2, 9994189), (43, 464846), (67, 298334), (86, 232423), (134, 149167), (2881, 6938), (3469, 5762)]