2171728

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:271

約数の個数: 40

約数和(自身を含む): 4640328

約数和(自身を除く): 2468600

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 197, 208, 212, 394, 424, 689, 788, 848, 1378, 1576, 2561, 2756, 3152, 5122, 5512, 10244, 10441, 11024, 20488, 20882, 40976, 41764, 83528, 135733, 167056, 271466, 542932, 1085864, 2171728]

約数ペア:

[(1, 2171728), (2, 1085864), (4, 542932), (8, 271466), (13, 167056), (16, 135733), (26, 83528), (52, 41764), (53, 40976), (104, 20882), (106, 20488), (197, 11024), (208, 10441), (212, 10244), (394, 5512), (424, 5122), (689, 3152), (788, 2756), (848, 2561), (1378, 1576)]