18128853

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1$

素因数の和:335

約数の個数: 40

約数和(自身を含む): 29132928

約数和(自身を除く): 11004075

約数列:

[1, 3, 9, 23, 27, 37, 69, 81, 111, 207, 263, 333, 621, 789, 851, 999, 1863, 2367, 2553, 2997, 6049, 7101, 7659, 9731, 18147, 21303, 22977, 29193, 54441, 68931, 87579, 163323, 223813, 262737, 489969, 671439, 788211, 2014317, 6042951, 18128853]

約数ペア:

[(1, 18128853), (3, 6042951), (9, 2014317), (23, 788211), (27, 671439), (37, 489969), (69, 262737), (81, 223813), (111, 163323), (207, 87579), (263, 68931), (333, 54441), (621, 29193), (789, 22977), (851, 21303), (999, 18147), (1863, 9731), (2367, 7659), (2553, 7101), (2997, 6049)]