16891475

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{827}}^1$

素因数の和:899

約数の個数: 24

約数和(自身を含む): 22587840

約数和(自身を除く): 5696365

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 817, 827, 1075, 4085, 4135, 15713, 20425, 20675, 35561, 78565, 177805, 392825, 675659, 889025, 3378295, 16891475]

約数ペア:

[(1, 16891475), (5, 3378295), (19, 889025), (25, 675659), (43, 392825), (95, 177805), (215, 78565), (475, 35561), (817, 20675), (827, 20425), (1075, 15713), (4085, 4135)]