21111954975

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{967}}^1\times {\mathrm{5107}}^1$

素因数の和:6109

約数の個数: 72

約数和(自身を含む): 39853024640

約数和(自身を除く): 18741069665

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 171, 225, 285, 475, 855, 967, 1425, 2901, 4275, 4835, 5107, 8703, 14505, 15321, 18373, 24175, 25535, 43515, 45963, 55119, 72525, 76605, 91865, 97033, 127675, 165357, 217575, 229815, 275595, 291099, 383025, 459325, 485165, 826785, 873297, 1149075, 1377975, 1455495, 2425825, 4133925, 4366485, 4938469, 7277475, 14815407, 21832425, 24692345, 44446221, 74077035, 93830911, 123461725, 222231105, 281492733, 370385175, 469154555, 844478199, 1111155525, 1407463665, 2345772775, 4222390995, 7037318325, 21111954975]

約数ペア:

[(1, 21111954975), (3, 7037318325), (5, 4222390995), (9, 2345772775), (15, 1407463665), (19, 1111155525), (25, 844478199), (45, 469154555), (57, 370385175), (75, 281492733), (95, 222231105), (171, 123461725), (225, 93830911), (285, 74077035), (475, 44446221), (855, 24692345), (967, 21832425), (1425, 14815407), (2901, 7277475), (4275, 4938469), (4835, 4366485), (5107, 4133925), (8703, 2425825), (14505, 1455495), (15321, 1377975), (18373, 1149075), (24175, 873297), (25535, 826785), (43515, 485165), (45963, 459325), (55119, 383025), (72525, 291099), (76605, 275595), (91865, 229815), (97033, 217575), (127675, 165357)]