13243209

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{33191}}^1$

素因数の和:33220

約数の個数: 16

約数和(自身を含む): 21242880

約数和(自身を除く): 7999671

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 33191, 99573, 232337, 630629, 697011, 1891887, 4414403, 13243209]

約数ペア:

[(1, 13243209), (3, 4414403), (7, 1891887), (19, 697011), (21, 630629), (57, 232337), (133, 99573), (399, 33191)]