13391721

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6857}}^1$

素因数の和:6901

約数の個数: 24

約数和(自身を含む): 22823424

約数和(自身を除く): 9431703

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 6857, 20571, 47999, 61713, 143997, 212567, 431991, 637701, 1487969, 1913103, 4463907, 13391721]

約数ペア:

[(1, 13391721), (3, 4463907), (7, 1913103), (9, 1487969), (21, 637701), (31, 431991), (63, 212567), (93, 143997), (217, 61713), (279, 47999), (651, 20571), (1953, 6857)]