20498005760

素因数分解:

$2^8\times 5^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{2851}}^1$

素因数の和:3050

約数の個数: 144

約数和(自身を含む): 50681568672

約数和(自身を除く): 30183562912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 137, 160, 164, 205, 256, 274, 320, 328, 410, 548, 640, 656, 685, 820, 1096, 1280, 1312, 1370, 1640, 2192, 2624, 2740, 2851, 3280, 4384, 5248, 5480, 5617, 5702, 6560, 8768, 10496, 10960, 11234, 11404, 13120, 14255, 17536, 21920, 22468, 22808, 26240, 28085, 28510, 35072, 43840, 44936, 45616, 52480, 56170, 57020, 87680, 89872, 91232, 112340, 114040, 116891, 175360, 179744, 182464, 224680, 228080, 233782, 359488, 364928, 390587, 449360, 456160, 467564, 584455, 718976, 729856, 781174, 898720, 912320, 935128, 1168910, 1437952, 1562348, 1797440, 1824640, 1870256, 1952935, 2337820, 3124696, 3594880, 3649280, 3740512, 3905870, 4675640, 6249392, 7189760, 7481024, 7811740, 9351280, 12498784, 14962048, 15623480, 16014067, 18702560, 24997568, 29924096, 31246960, 32028134, 37405120, 49995136, 62493920, 64056268, 74810240, 80070335, 99990272, 124987840, 128112536, 149620480, 160140670, 249975680, 256225072, 320281340, 499951360, 512450144, 640562680, 1024900288, 1281125360, 2049800576, 2562250720, 4099601152, 5124501440, 10249002880, 20498005760]

約数ペア:

[(1, 20498005760), (2, 10249002880), (4, 5124501440), (5, 4099601152), (8, 2562250720), (10, 2049800576), (16, 1281125360), (20, 1024900288), (32, 640562680), (40, 512450144), (41, 499951360), (64, 320281340), (80, 256225072), (82, 249975680), (128, 160140670), (137, 149620480), (160, 128112536), (164, 124987840), (205, 99990272), (256, 80070335), (274, 74810240), (320, 64056268), (328, 62493920), (410, 49995136), (548, 37405120), (640, 32028134), (656, 31246960), (685, 29924096), (820, 24997568), (1096, 18702560), (1280, 16014067), (1312, 15623480), (1370, 14962048), (1640, 12498784), (2192, 9351280), (2624, 7811740), (2740, 7481024), (2851, 7189760), (3280, 6249392), (4384, 4675640), (5248, 3905870), (5480, 3740512), (5617, 3649280), (5702, 3594880), (6560, 3124696), (8768, 2337820), (10496, 1952935), (10960, 1870256), (11234, 1824640), (11404, 1797440), (13120, 1562348), (14255, 1437952), (17536, 1168910), (21920, 935128), (22468, 912320), (22808, 898720), (26240, 781174), (28085, 729856), (28510, 718976), (35072, 584455), (43840, 467564), (44936, 456160), (45616, 449360), (52480, 390587), (56170, 364928), (57020, 359488), (87680, 233782), (89872, 228080), (91232, 224680), (112340, 182464), (114040, 179744), (116891, 175360)]