21781274825

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{2347}}^1$

素因数の和:2586

約数の個数: 48

約数和(自身を含む): 28247567040

約数和(自身を除く): 6466292215

約数列:

[1, 5, 25, 43, 89, 97, 215, 445, 485, 1075, 2225, 2347, 2425, 3827, 4171, 8633, 11735, 19135, 20855, 43165, 58675, 95675, 100921, 104275, 208883, 215825, 227659, 371219, 504605, 1044415, 1138295, 1856095, 2523025, 5222075, 5691475, 8981969, 9280475, 9789337, 20261651, 44909845, 48946685, 101308255, 224549225, 244733425, 506541275, 871250993, 4356254965, 21781274825]

約数ペア:

[(1, 21781274825), (5, 4356254965), (25, 871250993), (43, 506541275), (89, 244733425), (97, 224549225), (215, 101308255), (445, 48946685), (485, 44909845), (1075, 20261651), (2225, 9789337), (2347, 9280475), (2425, 8981969), (3827, 5691475), (4171, 5222075), (8633, 2523025), (11735, 1856095), (19135, 1138295), (20855, 1044415), (43165, 504605), (58675, 371219), (95675, 227659), (100921, 215825), (104275, 208883)]