9818991

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{631}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 18403840

約数和(自身を除く): 8584849

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 57, 63, 91, 117, 133, 171, 247, 273, 399, 631, 741, 819, 1197, 1729, 1893, 2223, 4417, 5187, 5679, 8203, 11989, 13251, 15561, 24609, 35967, 39753, 57421, 73827, 83923, 107901, 155857, 172263, 251769, 467571, 516789, 755307, 1090999, 1402713, 3272997, 9818991]

約数ペア:

[(1, 9818991), (3, 3272997), (7, 1402713), (9, 1090999), (13, 755307), (19, 516789), (21, 467571), (39, 251769), (57, 172263), (63, 155857), (91, 107901), (117, 83923), (133, 73827), (171, 57421), (247, 39753), (273, 35967), (399, 24609), (631, 15561), (741, 13251), (819, 11989), (1197, 8203), (1729, 5679), (1893, 5187), (2223, 4417)]