20565500900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{1291}}^1\times {\mathrm{3251}}^1$

素因数の和:4570

約数の個数: 108

約数和(自身を含む): 51969392496

約数和(自身を除く): 31403891596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 1291, 2450, 2582, 3251, 4900, 5164, 6455, 6502, 9037, 12910, 13004, 16255, 18074, 22757, 25820, 32275, 32510, 36148, 45185, 45514, 63259, 64550, 65020, 81275, 90370, 91028, 113785, 126518, 129100, 159299, 162550, 180740, 225925, 227570, 253036, 316295, 318598, 325100, 451850, 455140, 568925, 632590, 637196, 796495, 903700, 1137850, 1265180, 1581475, 1592990, 2275700, 3162950, 3185980, 3982475, 4197041, 6325900, 7964950, 8394082, 15929900, 16788164, 20985205, 29379287, 41970410, 58758574, 83940820, 104926025, 117517148, 146896435, 205655009, 209852050, 293792870, 411310018, 419704100, 587585740, 734482175, 822620036, 1028275045, 1468964350, 2056550090, 2937928700, 4113100180, 5141375225, 10282750450, 20565500900]

約数ペア:

[(1, 20565500900), (2, 10282750450), (4, 5141375225), (5, 4113100180), (7, 2937928700), (10, 2056550090), (14, 1468964350), (20, 1028275045), (25, 822620036), (28, 734482175), (35, 587585740), (49, 419704100), (50, 411310018), (70, 293792870), (98, 209852050), (100, 205655009), (140, 146896435), (175, 117517148), (196, 104926025), (245, 83940820), (350, 58758574), (490, 41970410), (700, 29379287), (980, 20985205), (1225, 16788164), (1291, 15929900), (2450, 8394082), (2582, 7964950), (3251, 6325900), (4900, 4197041), (5164, 3982475), (6455, 3185980), (6502, 3162950), (9037, 2275700), (12910, 1592990), (13004, 1581475), (16255, 1265180), (18074, 1137850), (22757, 903700), (25820, 796495), (32275, 637196), (32510, 632590), (36148, 568925), (45185, 455140), (45514, 451850), (63259, 325100), (64550, 318598), (65020, 316295), (81275, 253036), (90370, 227570), (91028, 225925), (113785, 180740), (126518, 162550), (129100, 159299)]