19906510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{11779}}^1$

素因数の和:11812

約数の個数: 24

約数和(自身を含む): 38803320

約数和(自身を除く): 18896810

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 11779, 23558, 58895, 117790, 153127, 306254, 765635, 1531270, 1990651, 3981302, 9953255, 19906510]

約数ペア:

[(1, 19906510), (2, 9953255), (5, 3981302), (10, 1990651), (13, 1531270), (26, 765635), (65, 306254), (130, 153127), (169, 117790), (338, 58895), (845, 23558), (1690, 11779)]