21287016

素因数分解:

$2^3\times 3^3\times {\mathrm{139}}^1\times {\mathrm{709}}^1$

素因数の和:863

約数の個数: 64

約数和(自身を含む): 59640000

約数和(自身を除く): 38352984

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 139, 216, 278, 417, 556, 709, 834, 1112, 1251, 1418, 1668, 2127, 2502, 2836, 3336, 3753, 4254, 5004, 5672, 6381, 7506, 8508, 10008, 12762, 15012, 17016, 19143, 25524, 30024, 38286, 51048, 76572, 98551, 153144, 197102, 295653, 394204, 591306, 788408, 886959, 1182612, 1773918, 2365224, 2660877, 3547836, 5321754, 7095672, 10643508, 21287016]

約数ペア:

[(1, 21287016), (2, 10643508), (3, 7095672), (4, 5321754), (6, 3547836), (8, 2660877), (9, 2365224), (12, 1773918), (18, 1182612), (24, 886959), (27, 788408), (36, 591306), (54, 394204), (72, 295653), (108, 197102), (139, 153144), (216, 98551), (278, 76572), (417, 51048), (556, 38286), (709, 30024), (834, 25524), (1112, 19143), (1251, 17016), (1418, 15012), (1668, 12762), (2127, 10008), (2502, 8508), (2836, 7506), (3336, 6381), (3753, 5672), (4254, 5004)]