81080840

素因数分解:

$2^3\times 5^1\times {\mathrm{2027021}}^1$

素因数の和:2027032

約数の個数: 16

約数和(自身を含む): 182431980

約数和(自身を除く): 101351140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2027021, 4054042, 8108084, 10135105, 16216168, 20270210, 40540420, 81080840]

約数ペア:

[(1, 81080840), (2, 40540420), (4, 20270210), (5, 16216168), (8, 10135105), (10, 8108084), (20, 4054042), (40, 2027021)]