21251294

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{1373}}^1$

素因数の和:1555

約数の個数: 16

約数和(自身を含む): 32646240

約数和(自身を除く): 11394946

約数列:

[1, 2, 71, 109, 142, 218, 1373, 2746, 7739, 15478, 97483, 149657, 194966, 299314, 10625647, 21251294]

約数ペア:

[(1, 21251294), (2, 10625647), (71, 299314), (109, 194966), (142, 149657), (218, 97483), (1373, 15478), (2746, 7739)]