21213291

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1471}}^1$

素因数の和:1527

約数の個数: 32

約数和(自身を含む): 33914880

約数和(自身を除く): 12701589

約数列:

[1, 3, 11, 19, 23, 33, 57, 69, 209, 253, 437, 627, 759, 1311, 1471, 4413, 4807, 14421, 16181, 27949, 33833, 48543, 83847, 101499, 307439, 372163, 642827, 922317, 1116489, 1928481, 7071097, 21213291]

約数ペア:

[(1, 21213291), (3, 7071097), (11, 1928481), (19, 1116489), (23, 922317), (33, 642827), (57, 372163), (69, 307439), (209, 101499), (253, 83847), (437, 48543), (627, 33833), (759, 27949), (1311, 16181), (1471, 14421), (4413, 4807)]