21408045500

素因数分解:

$2^2\times 5^3\times {\mathrm{97}}^1\times {\mathrm{441403}}^1$

素因数の和:441519

約数の個数: 48

約数和(自身を含む): 47237290464

約数和(自身を除く): 25829244964

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 97, 100, 125, 194, 250, 388, 485, 500, 970, 1940, 2425, 4850, 9700, 12125, 24250, 48500, 441403, 882806, 1765612, 2207015, 4414030, 8828060, 11035075, 22070150, 42816091, 44140300, 55175375, 85632182, 110350750, 171264364, 214080455, 220701500, 428160910, 856321820, 1070402275, 2140804550, 4281609100, 5352011375, 10704022750, 21408045500]

約数ペア:

[(1, 21408045500), (2, 10704022750), (4, 5352011375), (5, 4281609100), (10, 2140804550), (20, 1070402275), (25, 856321820), (50, 428160910), (97, 220701500), (100, 214080455), (125, 171264364), (194, 110350750), (250, 85632182), (388, 55175375), (485, 44140300), (500, 42816091), (970, 22070150), (1940, 11035075), (2425, 8828060), (4850, 4414030), (9700, 2207015), (12125, 1765612), (24250, 882806), (48500, 441403)]