19987630

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{11827}}^1$

素因数の和:11860

約数の個数: 24

約数和(自身を含む): 38961432

約数和(自身を除く): 18973802

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 11827, 23654, 59135, 118270, 153751, 307502, 768755, 1537510, 1998763, 3997526, 9993815, 19987630]

約数ペア:

[(1, 19987630), (2, 9993815), (5, 3997526), (10, 1998763), (13, 1537510), (26, 768755), (65, 307502), (130, 153751), (169, 118270), (338, 59135), (845, 23654), (1690, 11827)]