21157170

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{821}}^1\times {\mathrm{859}}^1$

素因数の和:1690

約数の個数: 32

約数和(自身を含む): 50898240

約数和(自身を除く): 29741070

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 821, 859, 1642, 1718, 2463, 2577, 4105, 4295, 4926, 5154, 8210, 8590, 12315, 12885, 24630, 25770, 705239, 1410478, 2115717, 3526195, 4231434, 7052390, 10578585, 21157170]

約数ペア:

[(1, 21157170), (2, 10578585), (3, 7052390), (5, 4231434), (6, 3526195), (10, 2115717), (15, 1410478), (30, 705239), (821, 25770), (859, 24630), (1642, 12885), (1718, 12315), (2463, 8590), (2577, 8210), (4105, 5154), (4295, 4926)]