21093390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3301}}^1$

素因数の和:3385

約数の個数: 48

約数和(自身を含む): 55632096

約数和(自身を除く): 34538706

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 142, 213, 355, 426, 639, 710, 1065, 1278, 2130, 3195, 3301, 6390, 6602, 9903, 16505, 19806, 29709, 33010, 49515, 59418, 99030, 148545, 234371, 297090, 468742, 703113, 1171855, 1406226, 2109339, 2343710, 3515565, 4218678, 7031130, 10546695, 21093390]

約数ペア:

[(1, 21093390), (2, 10546695), (3, 7031130), (5, 4218678), (6, 3515565), (9, 2343710), (10, 2109339), (15, 1406226), (18, 1171855), (30, 703113), (45, 468742), (71, 297090), (90, 234371), (142, 148545), (213, 99030), (355, 59418), (426, 49515), (639, 33010), (710, 29709), (1065, 19806), (1278, 16505), (2130, 9903), (3195, 6602), (3301, 6390)]