21054780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2207}}^1$

素因数の和:2275

約数の個数: 72

約数和(自身を含む): 65100672

約数和(自身を除く): 44045892

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 53, 60, 90, 106, 159, 180, 212, 265, 318, 477, 530, 636, 795, 954, 1060, 1590, 1908, 2207, 2385, 3180, 4414, 4770, 6621, 8828, 9540, 11035, 13242, 19863, 22070, 26484, 33105, 39726, 44140, 66210, 79452, 99315, 116971, 132420, 198630, 233942, 350913, 397260, 467884, 584855, 701826, 1052739, 1169710, 1403652, 1754565, 2105478, 2339420, 3509130, 4210956, 5263695, 7018260, 10527390, 21054780]

約数ペア:

[(1, 21054780), (2, 10527390), (3, 7018260), (4, 5263695), (5, 4210956), (6, 3509130), (9, 2339420), (10, 2105478), (12, 1754565), (15, 1403652), (18, 1169710), (20, 1052739), (30, 701826), (36, 584855), (45, 467884), (53, 397260), (60, 350913), (90, 233942), (106, 198630), (159, 132420), (180, 116971), (212, 99315), (265, 79452), (318, 66210), (477, 44140), (530, 39726), (636, 33105), (795, 26484), (954, 22070), (1060, 19863), (1590, 13242), (1908, 11035), (2207, 9540), (2385, 8828), (3180, 6621), (4414, 4770)]