21742259

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 28449792

約数和(自身を除く): 6707533

約数列:

[1, 7, 11, 41, 71, 77, 97, 287, 451, 497, 679, 781, 1067, 2911, 3157, 3977, 5467, 6887, 7469, 20377, 27839, 32021, 43747, 48209, 75757, 224147, 282367, 306229, 530299, 1976569, 3106037, 21742259]

約数ペア:

[(1, 21742259), (7, 3106037), (11, 1976569), (41, 530299), (71, 306229), (77, 282367), (97, 224147), (287, 75757), (451, 48209), (497, 43747), (679, 32021), (781, 27839), (1067, 20377), (2911, 7469), (3157, 6887), (3977, 5467)]