81753520

素因数分解:

$2^4\times 5^1\times {\mathrm{1021919}}^1$

素因数の和:1021932

約数の個数: 20

約数和(自身を含む): 190077120

約数和(自身を除く): 108323600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1021919, 2043838, 4087676, 5109595, 8175352, 10219190, 16350704, 20438380, 40876760, 81753520]

約数ペア:

[(1, 81753520), (2, 40876760), (4, 20438380), (5, 16350704), (8, 10219190), (10, 8175352), (16, 5109595), (20, 4087676), (40, 2043838), (80, 1021919)]