81425860

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{24379}}^1$

素因数の和:24555

約数の個数: 24

約数和(自身を含む): 172025280

約数和(自身を除く): 90599420

約数列:

[1, 2, 4, 5, 10, 20, 167, 334, 668, 835, 1670, 3340, 24379, 48758, 97516, 121895, 243790, 487580, 4071293, 8142586, 16285172, 20356465, 40712930, 81425860]

約数ペア:

[(1, 81425860), (2, 40712930), (4, 20356465), (5, 16285172), (10, 8142586), (20, 4071293), (167, 487580), (334, 243790), (668, 121895), (835, 97516), (1670, 48758), (3340, 24379)]