221574143

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{881}}^1$

素因数の和:999

約数の個数: 32

約数和(自身を含む): 279982080

約数和(自身を除く): 58407937

約数列:

[1, 7, 19, 31, 61, 133, 217, 427, 589, 881, 1159, 1891, 4123, 6167, 8113, 13237, 16739, 27311, 35929, 53741, 117173, 191177, 251503, 376187, 518909, 1021079, 1665971, 3632363, 7147553, 11661797, 31653449, 221574143]

約数ペア:

[(1, 221574143), (7, 31653449), (19, 11661797), (31, 7147553), (61, 3632363), (133, 1665971), (217, 1021079), (427, 518909), (589, 376187), (881, 251503), (1159, 191177), (1891, 117173), (4123, 53741), (6167, 35929), (8113, 27311), (13237, 16739)]