20516400

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:204

約数の個数: 180

約数和(自身を含む): 73458840

約数和(自身を除く): 52942440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 36, 40, 41, 45, 48, 50, 60, 72, 75, 80, 82, 90, 100, 120, 123, 139, 144, 150, 164, 180, 200, 205, 225, 240, 246, 278, 300, 328, 360, 369, 400, 410, 417, 450, 492, 556, 600, 615, 656, 695, 720, 738, 820, 834, 900, 984, 1025, 1112, 1200, 1230, 1251, 1390, 1476, 1640, 1668, 1800, 1845, 1968, 2050, 2085, 2224, 2460, 2502, 2780, 2952, 3075, 3280, 3336, 3475, 3600, 3690, 4100, 4170, 4920, 5004, 5560, 5699, 5904, 6150, 6255, 6672, 6950, 7380, 8200, 8340, 9225, 9840, 10008, 10425, 11120, 11398, 12300, 12510, 13900, 14760, 16400, 16680, 17097, 18450, 20016, 20850, 22796, 24600, 25020, 27800, 28495, 29520, 31275, 33360, 34194, 36900, 41700, 45592, 49200, 50040, 51291, 55600, 56990, 62550, 68388, 73800, 83400, 85485, 91184, 100080, 102582, 113980, 125100, 136776, 142475, 147600, 166800, 170970, 205164, 227960, 250200, 256455, 273552, 284950, 341940, 410328, 427425, 455920, 500400, 512910, 569900, 683880, 820656, 854850, 1025820, 1139800, 1282275, 1367760, 1709700, 2051640, 2279600, 2564550, 3419400, 4103280, 5129100, 6838800, 10258200, 20516400]

約数ペア:

[(1, 20516400), (2, 10258200), (3, 6838800), (4, 5129100), (5, 4103280), (6, 3419400), (8, 2564550), (9, 2279600), (10, 2051640), (12, 1709700), (15, 1367760), (16, 1282275), (18, 1139800), (20, 1025820), (24, 854850), (25, 820656), (30, 683880), (36, 569900), (40, 512910), (41, 500400), (45, 455920), (48, 427425), (50, 410328), (60, 341940), (72, 284950), (75, 273552), (80, 256455), (82, 250200), (90, 227960), (100, 205164), (120, 170970), (123, 166800), (139, 147600), (144, 142475), (150, 136776), (164, 125100), (180, 113980), (200, 102582), (205, 100080), (225, 91184), (240, 85485), (246, 83400), (278, 73800), (300, 68388), (328, 62550), (360, 56990), (369, 55600), (400, 51291), (410, 50040), (417, 49200), (450, 45592), (492, 41700), (556, 36900), (600, 34194), (615, 33360), (656, 31275), (695, 29520), (720, 28495), (738, 27800), (820, 25020), (834, 24600), (900, 22796), (984, 20850), (1025, 20016), (1112, 18450), (1200, 17097), (1230, 16680), (1251, 16400), (1390, 14760), (1476, 13900), (1640, 12510), (1668, 12300), (1800, 11398), (1845, 11120), (1968, 10425), (2050, 10008), (2085, 9840), (2224, 9225), (2460, 8340), (2502, 8200), (2780, 7380), (2952, 6950), (3075, 6672), (3280, 6255), (3336, 6150), (3475, 5904), (3600, 5699), (3690, 5560), (4100, 5004), (4170, 4920)]