81304840

素因数分解:

$2^3\times 5^1\times {\mathrm{2032621}}^1$

素因数の和:2032632

約数の個数: 16

約数和(自身を含む): 182935980

約数和(自身を除く): 101631140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2032621, 4065242, 8130484, 10163105, 16260968, 20326210, 40652420, 81304840]

約数ペア:

[(1, 81304840), (2, 40652420), (4, 20326210), (5, 16260968), (8, 10163105), (10, 8130484), (20, 4065242), (40, 2032621)]