20165988040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1\times {\mathrm{1291}}^1$

素因数の和:1715

約数の個数: 128

約数和(自身を含む): 50099005440

約数和(自身を除く): 29933017400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 131, 220, 262, 271, 440, 524, 542, 655, 1048, 1084, 1291, 1310, 1355, 1441, 2168, 2582, 2620, 2710, 2882, 2981, 5164, 5240, 5420, 5764, 5962, 6455, 7205, 10328, 10840, 11528, 11924, 12910, 14201, 14410, 14905, 23848, 25820, 28402, 28820, 29810, 35501, 51640, 56804, 57640, 59620, 71002, 71005, 113608, 119240, 142004, 142010, 169121, 177505, 284008, 284020, 338242, 349861, 355010, 390511, 568040, 676484, 699722, 710020, 781022, 845605, 1352968, 1399444, 1420040, 1562044, 1691210, 1749305, 1860331, 1952555, 2798888, 3124088, 3382420, 3498610, 3720662, 3848471, 3905110, 6764840, 6997220, 7441324, 7696942, 7810220, 9301655, 13994440, 14882648, 15393884, 15620440, 18603310, 19242355, 30787768, 37206620, 38484710, 45831791, 74413240, 76969420, 91663582, 153938840, 183327164, 229158955, 366654328, 458317910, 504149701, 916635820, 1008299402, 1833271640, 2016598804, 2520748505, 4033197608, 5041497010, 10082994020, 20165988040]

約数ペア:

[(1, 20165988040), (2, 10082994020), (4, 5041497010), (5, 4033197608), (8, 2520748505), (10, 2016598804), (11, 1833271640), (20, 1008299402), (22, 916635820), (40, 504149701), (44, 458317910), (55, 366654328), (88, 229158955), (110, 183327164), (131, 153938840), (220, 91663582), (262, 76969420), (271, 74413240), (440, 45831791), (524, 38484710), (542, 37206620), (655, 30787768), (1048, 19242355), (1084, 18603310), (1291, 15620440), (1310, 15393884), (1355, 14882648), (1441, 13994440), (2168, 9301655), (2582, 7810220), (2620, 7696942), (2710, 7441324), (2882, 6997220), (2981, 6764840), (5164, 3905110), (5240, 3848471), (5420, 3720662), (5764, 3498610), (5962, 3382420), (6455, 3124088), (7205, 2798888), (10328, 1952555), (10840, 1860331), (11528, 1749305), (11924, 1691210), (12910, 1562044), (14201, 1420040), (14410, 1399444), (14905, 1352968), (23848, 845605), (25820, 781022), (28402, 710020), (28820, 699722), (29810, 676484), (35501, 568040), (51640, 390511), (56804, 355010), (57640, 349861), (59620, 338242), (71002, 284020), (71005, 284008), (113608, 177505), (119240, 169121), (142004, 142010)]