21131036368

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{515693}}^1$

素因数の和:515911

約数の個数: 40

約数和(自身を含む): 44314616808

約数和(自身を除く): 23183580440

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 197, 208, 394, 788, 1576, 2561, 3152, 5122, 10244, 20488, 40976, 515693, 1031386, 2062772, 4125544, 6704009, 8251088, 13408018, 26816036, 53632072, 101591521, 107264144, 203183042, 406366084, 812732168, 1320689773, 1625464336, 2641379546, 5282759092, 10565518184, 21131036368]

約数ペア:

[(1, 21131036368), (2, 10565518184), (4, 5282759092), (8, 2641379546), (13, 1625464336), (16, 1320689773), (26, 812732168), (52, 406366084), (104, 203183042), (197, 107264144), (208, 101591521), (394, 53632072), (788, 26816036), (1576, 13408018), (2561, 8251088), (3152, 6704009), (5122, 4125544), (10244, 2062772), (20488, 1031386), (40976, 515693)]