20171520107

素因数分解:

${\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{479}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 22753198080

約数和(自身を除く): 2581677973

約数列:

[1, 19, 31, 53, 71, 361, 479, 589, 1007, 1349, 1643, 2201, 3763, 9101, 11191, 14849, 19133, 25387, 25631, 31217, 34009, 41819, 71497, 116653, 172919, 282131, 482353, 593123, 646171, 786997, 794561, 1054279, 1358443, 1802477, 2216407, 5360489, 9164707, 12277249, 14952943, 20031301, 34247063, 42111733, 55876787, 284105917, 380594719, 650694197, 1061658953, 20171520107]

約数ペア:

[(1, 20171520107), (19, 1061658953), (31, 650694197), (53, 380594719), (71, 284105917), (361, 55876787), (479, 42111733), (589, 34247063), (1007, 20031301), (1349, 14952943), (1643, 12277249), (2201, 9164707), (3763, 5360489), (9101, 2216407), (11191, 1802477), (14849, 1358443), (19133, 1054279), (25387, 794561), (25631, 786997), (31217, 646171), (34009, 593123), (41819, 482353), (71497, 282131), (116653, 172919)]