20954621920

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{647}}^1\times {\mathrm{2851}}^1$

素因数の和:3584

約数の個数: 96

約数和(自身を含む): 50297780736

約数和(自身を除く): 29343158816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 647, 710, 1136, 1294, 1420, 2272, 2588, 2840, 2851, 3235, 5176, 5680, 5702, 6470, 10352, 11360, 11404, 12940, 14255, 20704, 22808, 25880, 28510, 45616, 45937, 51760, 57020, 91232, 91874, 103520, 114040, 183748, 202421, 228080, 229685, 367496, 404842, 456160, 459370, 734992, 809684, 918740, 1012105, 1469984, 1619368, 1837480, 1844597, 2024210, 3238736, 3674960, 3689194, 4048420, 6477472, 7349920, 7378388, 8096840, 9222985, 14756776, 16193680, 18445970, 29513552, 32387360, 36891940, 59027104, 73783880, 130966387, 147567760, 261932774, 295135520, 523865548, 654831935, 1047731096, 1309663870, 2095462192, 2619327740, 4190924384, 5238655480, 10477310960, 20954621920]

約数ペア:

[(1, 20954621920), (2, 10477310960), (4, 5238655480), (5, 4190924384), (8, 2619327740), (10, 2095462192), (16, 1309663870), (20, 1047731096), (32, 654831935), (40, 523865548), (71, 295135520), (80, 261932774), (142, 147567760), (160, 130966387), (284, 73783880), (355, 59027104), (568, 36891940), (647, 32387360), (710, 29513552), (1136, 18445970), (1294, 16193680), (1420, 14756776), (2272, 9222985), (2588, 8096840), (2840, 7378388), (2851, 7349920), (3235, 6477472), (5176, 4048420), (5680, 3689194), (5702, 3674960), (6470, 3238736), (10352, 2024210), (11360, 1844597), (11404, 1837480), (12940, 1619368), (14255, 1469984), (20704, 1012105), (22808, 918740), (25880, 809684), (28510, 734992), (45616, 459370), (45937, 456160), (51760, 404842), (57020, 367496), (91232, 229685), (91874, 228080), (103520, 202421), (114040, 183748)]