19191591

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 36

約数和(自身を含む): 30193800

約数和(自身を除く): 11002209

約数列:

[1, 3, 9, 23, 29, 69, 87, 139, 207, 261, 417, 529, 667, 1251, 1587, 2001, 3197, 4031, 4761, 6003, 9591, 12093, 15341, 28773, 36279, 46023, 73531, 92713, 138069, 220593, 278139, 661779, 834417, 2132399, 6397197, 19191591]

約数ペア:

[(1, 19191591), (3, 6397197), (9, 2132399), (23, 834417), (29, 661779), (69, 278139), (87, 220593), (139, 138069), (207, 92713), (261, 73531), (417, 46023), (529, 36279), (667, 28773), (1251, 15341), (1587, 12093), (2001, 9591), (3197, 6003), (4031, 4761)]