19984510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21961}}^1$

素因数の和:21988

約数の個数: 32

約数和(自身を含む): 44275392

約数和(自身を除く): 24290882

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 21961, 43922, 109805, 153727, 219610, 285493, 307454, 570986, 768635, 1427465, 1537270, 1998451, 2854930, 3996902, 9992255, 19984510]

約数ペア:

[(1, 19984510), (2, 9992255), (5, 3996902), (7, 2854930), (10, 1998451), (13, 1537270), (14, 1427465), (26, 768635), (35, 570986), (65, 307454), (70, 285493), (91, 219610), (130, 153727), (182, 109805), (455, 43922), (910, 21961)]