80547220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{309797}}^1$

素因数の和:309819

約数の個数: 24

約数和(自身を含む): 182161224

約数和(自身を除く): 101614004

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 309797, 619594, 1239188, 1548985, 3097970, 4027361, 6195940, 8054722, 16109444, 20136805, 40273610, 80547220]

約数ペア:

[(1, 80547220), (2, 40273610), (4, 20136805), (5, 16109444), (10, 8054722), (13, 6195940), (20, 4027361), (26, 3097970), (52, 1548985), (65, 1239188), (130, 619594), (260, 309797)]