20802872950

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{110039}}^1$

素因数の和:110269

約数の個数: 48

約数和(自身を含む): 40934880000

約数和(自身を除く): 20132007050

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 190, 199, 398, 475, 950, 995, 1990, 3781, 4975, 7562, 9950, 18905, 37810, 94525, 110039, 189050, 220078, 550195, 1100390, 2090741, 2750975, 4181482, 5501950, 10453705, 20907410, 21897761, 43795522, 52268525, 104537050, 109488805, 218977610, 416057459, 547444025, 832114918, 1094888050, 2080287295, 4160574590, 10401436475, 20802872950]

約数ペア:

[(1, 20802872950), (2, 10401436475), (5, 4160574590), (10, 2080287295), (19, 1094888050), (25, 832114918), (38, 547444025), (50, 416057459), (95, 218977610), (190, 109488805), (199, 104537050), (398, 52268525), (475, 43795522), (950, 21897761), (995, 20907410), (1990, 10453705), (3781, 5501950), (4975, 4181482), (7562, 2750975), (9950, 2090741), (18905, 1100390), (37810, 550195), (94525, 220078), (110039, 189050)]