19804030

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27893}}^1$

素因数の和:27971

約数の個数: 16

約数和(自身を含む): 36150624

約数和(自身を除く): 16346594

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 27893, 55786, 139465, 278930, 1980403, 3960806, 9902015, 19804030]

約数ペア:

[(1, 19804030), (2, 9902015), (5, 3960806), (10, 1980403), (71, 278930), (142, 139465), (355, 55786), (710, 27893)]