19992156457

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{733}}^1\times {\mathrm{911}}^1$

素因数の和:1718

約数の個数: 48

約数和(自身を含む): 25641004032

約数和(自身を除く): 5648847575

約数列:

[1, 7, 13, 47, 49, 91, 329, 611, 637, 733, 911, 2303, 4277, 5131, 6377, 9529, 11843, 29939, 34451, 35917, 42817, 44639, 66703, 82901, 241157, 299719, 447863, 466921, 556621, 580307, 667763, 1688099, 2098033, 3135041, 3896347, 4674341, 8680919, 21945287, 27274429, 31384861, 32720387, 60766433, 219694027, 408003193, 425365031, 1537858189, 2856022351, 19992156457]

約数ペア:

[(1, 19992156457), (7, 2856022351), (13, 1537858189), (47, 425365031), (49, 408003193), (91, 219694027), (329, 60766433), (611, 32720387), (637, 31384861), (733, 27274429), (911, 21945287), (2303, 8680919), (4277, 4674341), (5131, 3896347), (6377, 3135041), (9529, 2098033), (11843, 1688099), (29939, 667763), (34451, 580307), (35917, 556621), (42817, 466921), (44639, 447863), (66703, 299719), (82901, 241157)]