20218442800

素因数分解:

$2^4\times 5^2\times {\mathrm{37}}^1\times {\mathrm{71}}^2\times {\mathrm{271}}^1$

素因数の和:468

約数の個数: 180

約数和(自身を含む): 50786897248

約数和(自身を除く): 30568454448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 37, 40, 50, 71, 74, 80, 100, 142, 148, 185, 200, 271, 284, 296, 355, 370, 400, 542, 568, 592, 710, 740, 925, 1084, 1136, 1355, 1420, 1480, 1775, 1850, 2168, 2627, 2710, 2840, 2960, 3550, 3700, 4336, 5041, 5254, 5420, 5680, 6775, 7100, 7400, 10027, 10082, 10508, 10840, 13135, 13550, 14200, 14800, 19241, 20054, 20164, 21016, 21680, 25205, 26270, 27100, 28400, 38482, 40108, 40328, 42032, 50135, 50410, 52540, 54200, 65675, 76964, 80216, 80656, 96205, 100270, 100820, 105080, 108400, 126025, 131350, 153928, 160432, 186517, 192410, 200540, 201640, 210160, 250675, 252050, 262700, 307856, 373034, 384820, 401080, 403280, 481025, 501350, 504100, 525400, 711917, 746068, 769640, 802160, 932585, 962050, 1002700, 1008200, 1050800, 1366111, 1423834, 1492136, 1539280, 1865170, 1924100, 2005400, 2016400, 2732222, 2847668, 2984272, 3559585, 3730340, 3848200, 4010800, 4662925, 5464444, 5695336, 6830555, 7119170, 7460680, 7696400, 9325850, 10928888, 11390672, 13661110, 14238340, 14921360, 17797925, 18651700, 21857776, 27322220, 28476680, 34152775, 35595850, 37303400, 50546107, 54644440, 56953360, 68305550, 71191700, 74606800, 101092214, 109288880, 136611100, 142383400, 202184428, 252730535, 273222200, 284766800, 404368856, 505461070, 546444400, 808737712, 1010922140, 1263652675, 2021844280, 2527305350, 4043688560, 5054610700, 10109221400, 20218442800]

約数ペア:

[(1, 20218442800), (2, 10109221400), (4, 5054610700), (5, 4043688560), (8, 2527305350), (10, 2021844280), (16, 1263652675), (20, 1010922140), (25, 808737712), (37, 546444400), (40, 505461070), (50, 404368856), (71, 284766800), (74, 273222200), (80, 252730535), (100, 202184428), (142, 142383400), (148, 136611100), (185, 109288880), (200, 101092214), (271, 74606800), (284, 71191700), (296, 68305550), (355, 56953360), (370, 54644440), (400, 50546107), (542, 37303400), (568, 35595850), (592, 34152775), (710, 28476680), (740, 27322220), (925, 21857776), (1084, 18651700), (1136, 17797925), (1355, 14921360), (1420, 14238340), (1480, 13661110), (1775, 11390672), (1850, 10928888), (2168, 9325850), (2627, 7696400), (2710, 7460680), (2840, 7119170), (2960, 6830555), (3550, 5695336), (3700, 5464444), (4336, 4662925), (5041, 4010800), (5254, 3848200), (5420, 3730340), (5680, 3559585), (6775, 2984272), (7100, 2847668), (7400, 2732222), (10027, 2016400), (10082, 2005400), (10508, 1924100), (10840, 1865170), (13135, 1539280), (13550, 1492136), (14200, 1423834), (14800, 1366111), (19241, 1050800), (20054, 1008200), (20164, 1002700), (21016, 962050), (21680, 932585), (25205, 802160), (26270, 769640), (27100, 746068), (28400, 711917), (38482, 525400), (40108, 504100), (40328, 501350), (42032, 481025), (50135, 403280), (50410, 401080), (52540, 384820), (54200, 373034), (65675, 307856), (76964, 262700), (80216, 252050), (80656, 250675), (96205, 210160), (100270, 201640), (100820, 200540), (105080, 192410), (108400, 186517), (126025, 160432), (131350, 153928)]