21208710

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{823}}^1\times {\mathrm{859}}^1$

素因数の和:1692

約数の個数: 32

約数和(自身を含む): 51022080

約数和(自身を除く): 29813370

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 823, 859, 1646, 1718, 2469, 2577, 4115, 4295, 4938, 5154, 8230, 8590, 12345, 12885, 24690, 25770, 706957, 1413914, 2120871, 3534785, 4241742, 7069570, 10604355, 21208710]

約数ペア:

[(1, 21208710), (2, 10604355), (3, 7069570), (5, 4241742), (6, 3534785), (10, 2120871), (15, 1413914), (30, 706957), (823, 25770), (859, 24690), (1646, 12885), (1718, 12345), (2469, 8590), (2577, 8230), (4115, 5154), (4295, 4938)]