20212561160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{449}}^1$

素因数の和:684

約数の個数: 192

約数和(自身を含む): 51193296000

約数和(自身を除く): 30980734840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 121, 131, 142, 220, 242, 262, 284, 355, 440, 449, 484, 524, 568, 605, 655, 710, 781, 898, 968, 1048, 1210, 1310, 1420, 1441, 1562, 1796, 2245, 2420, 2620, 2840, 2882, 3124, 3592, 3905, 4490, 4840, 4939, 5240, 5764, 6248, 7205, 7810, 8591, 8980, 9301, 9878, 11528, 14410, 15620, 15851, 17182, 17960, 18602, 19756, 24695, 28820, 31240, 31702, 31879, 34364, 37204, 39512, 42955, 46505, 49390, 54329, 57640, 58819, 63404, 63758, 68728, 74408, 79255, 85910, 93010, 98780, 102311, 108658, 117638, 126808, 127516, 158510, 159395, 171820, 186020, 197560, 204622, 217316, 235276, 255032, 271645, 294095, 317020, 318790, 343640, 350669, 372040, 409244, 434632, 470552, 511555, 543290, 588190, 634040, 637580, 647009, 701338, 818488, 1023110, 1086580, 1125421, 1176380, 1275160, 1294018, 1402676, 1753345, 2046220, 2173160, 2250842, 2352760, 2588036, 2805352, 3235045, 3506690, 3857359, 4092440, 4176149, 4501684, 5176072, 5627105, 6470090, 7013380, 7117099, 7714718, 8352298, 9003368, 11254210, 12940180, 14026760, 14234198, 15429436, 16704596, 19286795, 20880745, 22508420, 25880360, 28468396, 30858872, 33409192, 35585495, 38573590, 41761490, 45016840, 45937639, 56936792, 71170990, 77147180, 83522980, 91875278, 142341980, 154294360, 167045960, 183750556, 229688195, 284683960, 367501112, 459376390, 505314029, 918752780, 1010628058, 1837505560, 2021256116, 2526570145, 4042512232, 5053140290, 10106280580, 20212561160]

約数ペア:

[(1, 20212561160), (2, 10106280580), (4, 5053140290), (5, 4042512232), (8, 2526570145), (10, 2021256116), (11, 1837505560), (20, 1010628058), (22, 918752780), (40, 505314029), (44, 459376390), (55, 367501112), (71, 284683960), (88, 229688195), (110, 183750556), (121, 167045960), (131, 154294360), (142, 142341980), (220, 91875278), (242, 83522980), (262, 77147180), (284, 71170990), (355, 56936792), (440, 45937639), (449, 45016840), (484, 41761490), (524, 38573590), (568, 35585495), (605, 33409192), (655, 30858872), (710, 28468396), (781, 25880360), (898, 22508420), (968, 20880745), (1048, 19286795), (1210, 16704596), (1310, 15429436), (1420, 14234198), (1441, 14026760), (1562, 12940180), (1796, 11254210), (2245, 9003368), (2420, 8352298), (2620, 7714718), (2840, 7117099), (2882, 7013380), (3124, 6470090), (3592, 5627105), (3905, 5176072), (4490, 4501684), (4840, 4176149), (4939, 4092440), (5240, 3857359), (5764, 3506690), (6248, 3235045), (7205, 2805352), (7810, 2588036), (8591, 2352760), (8980, 2250842), (9301, 2173160), (9878, 2046220), (11528, 1753345), (14410, 1402676), (15620, 1294018), (15851, 1275160), (17182, 1176380), (17960, 1125421), (18602, 1086580), (19756, 1023110), (24695, 818488), (28820, 701338), (31240, 647009), (31702, 637580), (31879, 634040), (34364, 588190), (37204, 543290), (39512, 511555), (42955, 470552), (46505, 434632), (49390, 409244), (54329, 372040), (57640, 350669), (58819, 343640), (63404, 318790), (63758, 317020), (68728, 294095), (74408, 271645), (79255, 255032), (85910, 235276), (93010, 217316), (98780, 204622), (102311, 197560), (108658, 186020), (117638, 171820), (126808, 159395), (127516, 158510)]