21671727

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{4079}}^1$

素因数の和:4123

約数の個数: 32

約数和(自身を含む): 37601280

約数和(自身を除く): 15929553

約数列:

[1, 3, 7, 11, 21, 23, 33, 69, 77, 161, 231, 253, 483, 759, 1771, 4079, 5313, 12237, 28553, 44869, 85659, 93817, 134607, 281451, 314083, 656719, 942249, 1031987, 1970157, 3095961, 7223909, 21671727]

約数ペア:

[(1, 21671727), (3, 7223909), (7, 3095961), (11, 1970157), (21, 1031987), (23, 942249), (33, 656719), (69, 314083), (77, 281451), (161, 134607), (231, 93817), (253, 85659), (483, 44869), (759, 28553), (1771, 12237), (4079, 5313)]