21056556575

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{3559}}^1\times {\mathrm{13921}}^1$

素因数の和:17507

約数の個数: 24

約数和(自身を含む): 27655774560

約数和(自身を除く): 6599217985

約数列:

[1, 5, 17, 25, 85, 425, 3559, 13921, 17795, 60503, 69605, 88975, 236657, 302515, 348025, 1183285, 1512575, 5916425, 49544839, 247724195, 842262263, 1238620975, 4211311315, 21056556575]

約数ペア:

[(1, 21056556575), (5, 4211311315), (17, 1238620975), (25, 842262263), (85, 247724195), (425, 49544839), (3559, 5916425), (13921, 1512575), (17795, 1183285), (60503, 348025), (69605, 302515), (88975, 236657)]