20784816

素因数分解:

$2^4\times 3^3\times {\mathrm{13}}^1\times {\mathrm{3701}}^1$

素因数の和:3731

約数の個数: 80

約数和(自身を含む): 64266720

約数和(自身を除く): 43481904

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 36, 39, 48, 52, 54, 72, 78, 104, 108, 117, 144, 156, 208, 216, 234, 312, 351, 432, 468, 624, 702, 936, 1404, 1872, 2808, 3701, 5616, 7402, 11103, 14804, 22206, 29608, 33309, 44412, 48113, 59216, 66618, 88824, 96226, 99927, 133236, 144339, 177648, 192452, 199854, 266472, 288678, 384904, 399708, 433017, 532944, 577356, 769808, 799416, 866034, 1154712, 1299051, 1598832, 1732068, 2309424, 2598102, 3464136, 5196204, 6928272, 10392408, 20784816]

約数ペア:

[(1, 20784816), (2, 10392408), (3, 6928272), (4, 5196204), (6, 3464136), (8, 2598102), (9, 2309424), (12, 1732068), (13, 1598832), (16, 1299051), (18, 1154712), (24, 866034), (26, 799416), (27, 769808), (36, 577356), (39, 532944), (48, 433017), (52, 399708), (54, 384904), (72, 288678), (78, 266472), (104, 199854), (108, 192452), (117, 177648), (144, 144339), (156, 133236), (208, 99927), (216, 96226), (234, 88824), (312, 66618), (351, 59216), (432, 48113), (468, 44412), (624, 33309), (702, 29608), (936, 22206), (1404, 14804), (1872, 11103), (2808, 7402), (3701, 5616)]