21385331

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{467}}^1$

素因数の和:682

約数の個数: 16

約数和(自身を含む): 24530688

約数和(自身を除く): 3145357

約数列:

[1, 11, 23, 181, 253, 467, 1991, 4163, 5137, 10741, 45793, 84527, 118151, 929797, 1944121, 21385331]

約数ペア:

[(1, 21385331), (11, 1944121), (23, 929797), (181, 118151), (253, 84527), (467, 45793), (1991, 10741), (4163, 5137)]