19911590

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{117127}}^1$

素因数の和:117151

約数の個数: 16

約数和(自身を含む): 37949472

約数和(自身を除く): 18037882

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 117127, 234254, 585635, 1171270, 1991159, 3982318, 9955795, 19911590]

約数ペア:

[(1, 19911590), (2, 9955795), (5, 3982318), (10, 1991159), (17, 1171270), (34, 585635), (85, 234254), (170, 117127)]