201820815

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{277}}^1$

素因数の和:558

約数の個数: 80

約数和(自身を含む): 416572992

約数和(自身を除く): 214752177

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 257, 277, 315, 405, 567, 771, 831, 945, 1285, 1385, 1799, 1939, 2313, 2493, 2835, 3855, 4155, 5397, 5817, 6939, 7479, 8995, 9695, 11565, 12465, 16191, 17451, 20817, 22437, 26985, 29085, 34695, 37395, 48573, 52353, 71189, 80955, 87255, 104085, 112185, 145719, 157059, 213567, 242865, 261765, 355945, 498323, 640701, 728595, 785295, 1067835, 1494969, 1922103, 2491615, 3203505, 4484907, 5766309, 7474845, 9610515, 13454721, 22424535, 28831545, 40364163, 67273605, 201820815]

約数ペア:

[(1, 201820815), (3, 67273605), (5, 40364163), (7, 28831545), (9, 22424535), (15, 13454721), (21, 9610515), (27, 7474845), (35, 5766309), (45, 4484907), (63, 3203505), (81, 2491615), (105, 1922103), (135, 1494969), (189, 1067835), (257, 785295), (277, 728595), (315, 640701), (405, 498323), (567, 355945), (771, 261765), (831, 242865), (945, 213567), (1285, 157059), (1385, 145719), (1799, 112185), (1939, 104085), (2313, 87255), (2493, 80955), (2835, 71189), (3855, 52353), (4155, 48573), (5397, 37395), (5817, 34695), (6939, 29085), (7479, 26985), (8995, 22437), (9695, 20817), (11565, 17451), (12465, 16191)]