19557905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{5351}}^1$

素因数の和:5416

約数の個数: 16

約数和(自身を含む): 25432704

約数和(自身を除く): 5874799

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 5351, 26755, 90967, 230093, 454835, 1150465, 3911581, 19557905]

約数ペア:

[(1, 19557905), (5, 3911581), (17, 1150465), (43, 454835), (85, 230093), (215, 90967), (731, 26755), (3655, 5351)]