21021556

素因数分解:

$2^2\times {\mathrm{1559}}^1\times {\mathrm{3371}}^1$

素因数の和:4934

約数の個数: 12

約数和(自身を含む): 36822240

約数和(自身を除く): 15800684

約数列:

[1, 2, 4, 1559, 3118, 3371, 6236, 6742, 13484, 5255389, 10510778, 21021556]

約数ペア:

[(1, 21021556), (2, 10510778), (4, 5255389), (1559, 13484), (3118, 6742), (3371, 6236)]