20171921030

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{479}}^1$

素因数の和:726

約数の個数: 128

約数和(自身を含む): 40728821760

約数和(自身を除く): 20556900730

約数列:

[1, 2, 5, 10, 17, 31, 34, 61, 62, 85, 122, 131, 155, 170, 262, 305, 310, 479, 527, 610, 655, 958, 1037, 1054, 1310, 1891, 2074, 2227, 2395, 2635, 3782, 4061, 4454, 4790, 5185, 5270, 7991, 8122, 8143, 9455, 10370, 11135, 14849, 15982, 16286, 18910, 20305, 22270, 29219, 29698, 32147, 39955, 40610, 40715, 58438, 62749, 64294, 69037, 74245, 79910, 81430, 125498, 135847, 138074, 146095, 148490, 160735, 247721, 252433, 271694, 292190, 313745, 321470, 345185, 495442, 496723, 504866, 627490, 679235, 690370, 905789, 993446, 1066733, 1238605, 1262165, 1358470, 1811578, 1945219, 2133466, 2477210, 2483615, 2524330, 3827689, 3890438, 4211257, 4528945, 4967230, 5333665, 7655378, 8422514, 9057890, 9726095, 10667330, 15398413, 19138445, 19452190, 21056285, 30796826, 33068723, 38276890, 42112570, 65070713, 66137446, 76992065, 118658359, 130141426, 153984130, 165343615, 237316718, 325353565, 330687230, 593291795, 650707130, 1186583590, 2017192103, 4034384206, 10085960515, 20171921030]

約数ペア:

[(1, 20171921030), (2, 10085960515), (5, 4034384206), (10, 2017192103), (17, 1186583590), (31, 650707130), (34, 593291795), (61, 330687230), (62, 325353565), (85, 237316718), (122, 165343615), (131, 153984130), (155, 130141426), (170, 118658359), (262, 76992065), (305, 66137446), (310, 65070713), (479, 42112570), (527, 38276890), (610, 33068723), (655, 30796826), (958, 21056285), (1037, 19452190), (1054, 19138445), (1310, 15398413), (1891, 10667330), (2074, 9726095), (2227, 9057890), (2395, 8422514), (2635, 7655378), (3782, 5333665), (4061, 4967230), (4454, 4528945), (4790, 4211257), (5185, 3890438), (5270, 3827689), (7991, 2524330), (8122, 2483615), (8143, 2477210), (9455, 2133466), (10370, 1945219), (11135, 1811578), (14849, 1358470), (15982, 1262165), (16286, 1238605), (18910, 1066733), (20305, 993446), (22270, 905789), (29219, 690370), (29698, 679235), (32147, 627490), (39955, 504866), (40610, 496723), (40715, 495442), (58438, 345185), (62749, 321470), (64294, 313745), (69037, 292190), (74245, 271694), (79910, 252433), (81430, 247721), (125498, 160735), (135847, 148490), (138074, 146095)]