81525680

素因数分解:

$2^4\times 5^1\times {\mathrm{1019071}}^1$

素因数の和:1019084

約数の個数: 20

約数和(自身を含む): 189547392

約数和(自身を除く): 108021712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1019071, 2038142, 4076284, 5095355, 8152568, 10190710, 16305136, 20381420, 40762840, 81525680]

約数ペア:

[(1, 81525680), (2, 40762840), (4, 20381420), (5, 16305136), (8, 10190710), (10, 8152568), (16, 5095355), (20, 4076284), (40, 2038142), (80, 1019071)]