20648319

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{607}}^1$

素因数の和:679

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10870401

約数列:

[1, 3, 17, 23, 29, 51, 69, 87, 391, 493, 607, 667, 1173, 1479, 1821, 2001, 10319, 11339, 13961, 17603, 30957, 34017, 41883, 52809, 237337, 299251, 404869, 712011, 897753, 1214607, 6882773, 20648319]

約数ペア:

[(1, 20648319), (3, 6882773), (17, 1214607), (23, 897753), (29, 712011), (51, 404869), (69, 299251), (87, 237337), (391, 52809), (493, 41883), (607, 34017), (667, 30957), (1173, 17603), (1479, 13961), (1821, 11339), (2001, 10319)]