20804967140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1\times {\mathrm{170003}}^1$

素因数の和:170252

約数の個数: 48

約数和(自身を含む): 45411468480

約数和(自身を除く): 24606501340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 211, 290, 422, 580, 844, 1055, 2110, 4220, 6119, 12238, 24476, 30595, 61190, 122380, 170003, 340006, 680012, 850015, 1700030, 3400060, 4930087, 9860174, 19720348, 24650435, 35870633, 49300870, 71741266, 98601740, 143482532, 179353165, 358706330, 717412660, 1040248357, 2080496714, 4160993428, 5201241785, 10402483570, 20804967140]

約数ペア:

[(1, 20804967140), (2, 10402483570), (4, 5201241785), (5, 4160993428), (10, 2080496714), (20, 1040248357), (29, 717412660), (58, 358706330), (116, 179353165), (145, 143482532), (211, 98601740), (290, 71741266), (422, 49300870), (580, 35870633), (844, 24650435), (1055, 19720348), (2110, 9860174), (4220, 4930087), (6119, 3400060), (12238, 1700030), (24476, 850015), (30595, 680012), (61190, 340006), (122380, 170003)]