80493775

素因数分解:

$5^2\times {\mathrm{109}}^2\times {\mathrm{271}}^1$

素因数の和:499

約数の個数: 18

約数和(自身を含む): 101108112

約数和(自身を除く): 20614337

約数列:

[1, 5, 25, 109, 271, 545, 1355, 2725, 6775, 11881, 29539, 59405, 147695, 297025, 738475, 3219751, 16098755, 80493775]

約数ペア:

[(1, 80493775), (5, 16098755), (25, 3219751), (109, 738475), (271, 297025), (545, 147695), (1355, 59405), (2725, 29539), (6775, 11881)]