258751280

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{23269}}^1$

素因数の和:23421

約数の個数: 40

約数和(自身を含む): 605950800

約数和(自身を除く): 347199520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2780, 5560, 11120, 23269, 46538, 93076, 116345, 186152, 232690, 372304, 465380, 930760, 1861520, 3234391, 6468782, 12937564, 16171955, 25875128, 32343910, 51750256, 64687820, 129375640, 258751280]

約数ペア:

[(1, 258751280), (2, 129375640), (4, 64687820), (5, 51750256), (8, 32343910), (10, 25875128), (16, 16171955), (20, 12937564), (40, 6468782), (80, 3234391), (139, 1861520), (278, 930760), (556, 465380), (695, 372304), (1112, 232690), (1390, 186152), (2224, 116345), (2780, 93076), (5560, 46538), (11120, 23269)]