19800693

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:407

約数の個数: 40

約数和(自身を含む): 32826816

約数和(自身を除く): 13026123

約数列:

[1, 3, 9, 11, 27, 33, 71, 81, 99, 213, 297, 313, 639, 781, 891, 939, 1917, 2343, 2817, 3443, 5751, 7029, 8451, 10329, 21087, 22223, 25353, 30987, 63261, 66669, 92961, 200007, 244453, 278883, 600021, 733359, 1800063, 2200077, 6600231, 19800693]

約数ペア:

[(1, 19800693), (3, 6600231), (9, 2200077), (11, 1800063), (27, 733359), (33, 600021), (71, 278883), (81, 244453), (99, 200007), (213, 92961), (297, 66669), (313, 63261), (639, 30987), (781, 25353), (891, 22223), (939, 21087), (1917, 10329), (2343, 8451), (2817, 7029), (3443, 5751)]