81902125

素因数分解:

$5^3\times {\mathrm{643}}^1\times {\mathrm{1019}}^1$

素因数の和:1677

約数の個数: 16

約数和(自身を含む): 102473280

約数和(自身を除く): 20571155

約数列:

[1, 5, 25, 125, 643, 1019, 3215, 5095, 16075, 25475, 80375, 127375, 655217, 3276085, 16380425, 81902125]

約数ペア:

[(1, 81902125), (5, 16380425), (25, 3276085), (125, 655217), (643, 127375), (1019, 80375), (3215, 25475), (5095, 16075)]