19902753

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{461}}^1$

素因数の和:527

約数の個数: 40

約数和(自身を含む): 32870376

約数和(自身を除く): 12967623

約数列:

[1, 3, 9, 13, 27, 39, 41, 81, 117, 123, 351, 369, 461, 533, 1053, 1107, 1383, 1599, 3321, 4149, 4797, 5993, 12447, 14391, 17979, 18901, 37341, 43173, 53937, 56703, 161811, 170109, 245713, 485433, 510327, 737139, 1530981, 2211417, 6634251, 19902753]

約数ペア:

[(1, 19902753), (3, 6634251), (9, 2211417), (13, 1530981), (27, 737139), (39, 510327), (41, 485433), (81, 245713), (117, 170109), (123, 161811), (351, 56703), (369, 53937), (461, 43173), (533, 37341), (1053, 18901), (1107, 17979), (1383, 14391), (1599, 12447), (3321, 5993), (4149, 4797)]