21338349

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^3\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 32

約数和(自身を含む): 32319360

約数和(自身を除く): 10981011

約数列:

[1, 3, 17, 19, 51, 57, 61, 183, 323, 361, 969, 1037, 1083, 1159, 3111, 3477, 6137, 6859, 18411, 19703, 20577, 22021, 59109, 66063, 116603, 349809, 374357, 418399, 1123071, 1255197, 7112783, 21338349]

約数ペア:

[(1, 21338349), (3, 7112783), (17, 1255197), (19, 1123071), (51, 418399), (57, 374357), (61, 349809), (183, 116603), (323, 66063), (361, 59109), (969, 22021), (1037, 20577), (1083, 19703), (1159, 18411), (3111, 6859), (3477, 6137)]