87689975

素因数分解:

$5^2\times {\mathrm{181}}^1\times {\mathrm{19379}}^1$

素因数の和:19570

約数の個数: 12

約数和(自身を含む): 109341960

約数和(自身を除く): 21651985

約数列:

[1, 5, 25, 181, 905, 4525, 19379, 96895, 484475, 3507599, 17537995, 87689975]

約数ペア:

[(1, 87689975), (5, 17537995), (25, 3507599), (181, 484475), (905, 96895), (4525, 19379)]