20637720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:314

約数の個数: 128

約数和(自身を含む): 69854400

約数和(自身を除く): 49216680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 97, 108, 120, 135, 180, 194, 197, 216, 270, 291, 360, 388, 394, 485, 540, 582, 591, 776, 788, 873, 970, 985, 1080, 1164, 1182, 1455, 1576, 1746, 1773, 1940, 1970, 2328, 2364, 2619, 2910, 2955, 3492, 3546, 3880, 3940, 4365, 4728, 5238, 5319, 5820, 5910, 6984, 7092, 7880, 8730, 8865, 10476, 10638, 11640, 11820, 13095, 14184, 17460, 17730, 19109, 20952, 21276, 23640, 26190, 26595, 34920, 35460, 38218, 42552, 52380, 53190, 57327, 70920, 76436, 95545, 104760, 106380, 114654, 152872, 171981, 191090, 212760, 229308, 286635, 343962, 382180, 458616, 515943, 573270, 687924, 764360, 859905, 1031886, 1146540, 1375848, 1719810, 2063772, 2293080, 2579715, 3439620, 4127544, 5159430, 6879240, 10318860, 20637720]

約数ペア:

[(1, 20637720), (2, 10318860), (3, 6879240), (4, 5159430), (5, 4127544), (6, 3439620), (8, 2579715), (9, 2293080), (10, 2063772), (12, 1719810), (15, 1375848), (18, 1146540), (20, 1031886), (24, 859905), (27, 764360), (30, 687924), (36, 573270), (40, 515943), (45, 458616), (54, 382180), (60, 343962), (72, 286635), (90, 229308), (97, 212760), (108, 191090), (120, 171981), (135, 152872), (180, 114654), (194, 106380), (197, 104760), (216, 95545), (270, 76436), (291, 70920), (360, 57327), (388, 53190), (394, 52380), (485, 42552), (540, 38218), (582, 35460), (591, 34920), (776, 26595), (788, 26190), (873, 23640), (970, 21276), (985, 20952), (1080, 19109), (1164, 17730), (1182, 17460), (1455, 14184), (1576, 13095), (1746, 11820), (1773, 11640), (1940, 10638), (1970, 10476), (2328, 8865), (2364, 8730), (2619, 7880), (2910, 7092), (2955, 6984), (3492, 5910), (3546, 5820), (3880, 5319), (3940, 5238), (4365, 4728)]