20657754

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{577}}^1$

素因数の和:621

約数の個数: 80

約数和(自身を含む): 52873128

約数和(自身を除く): 32215374

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 27, 34, 39, 51, 54, 78, 81, 102, 117, 153, 162, 221, 234, 306, 351, 442, 459, 577, 663, 702, 918, 1053, 1154, 1326, 1377, 1731, 1989, 2106, 2754, 3462, 3978, 5193, 5967, 7501, 9809, 10386, 11934, 15002, 15579, 17901, 19618, 22503, 29427, 31158, 35802, 45006, 46737, 58854, 67509, 88281, 93474, 127517, 135018, 176562, 202527, 255034, 264843, 382551, 405054, 529686, 607581, 765102, 794529, 1147653, 1215162, 1589058, 2295306, 3442959, 6885918, 10328877, 20657754]

約数ペア:

[(1, 20657754), (2, 10328877), (3, 6885918), (6, 3442959), (9, 2295306), (13, 1589058), (17, 1215162), (18, 1147653), (26, 794529), (27, 765102), (34, 607581), (39, 529686), (51, 405054), (54, 382551), (78, 264843), (81, 255034), (102, 202527), (117, 176562), (153, 135018), (162, 127517), (221, 93474), (234, 88281), (306, 67509), (351, 58854), (442, 46737), (459, 45006), (577, 35802), (663, 31158), (702, 29427), (918, 22503), (1053, 19618), (1154, 17901), (1326, 15579), (1377, 15002), (1731, 11934), (1989, 10386), (2106, 9809), (2754, 7501), (3462, 5967), (3978, 5193)]