21986253

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:226

約数の個数: 36

約数和(自身を含む): 34482240

約数和(自身を除く): 12495987

約数列:

[1, 3, 9, 17, 51, 79, 107, 153, 237, 289, 321, 711, 867, 963, 1343, 1819, 2601, 4029, 5457, 8453, 12087, 16371, 22831, 25359, 30923, 68493, 76077, 92769, 143701, 205479, 278307, 431103, 1293309, 2442917, 7328751, 21986253]

約数ペア:

[(1, 21986253), (3, 7328751), (9, 2442917), (17, 1293309), (51, 431103), (79, 278307), (107, 205479), (153, 143701), (237, 92769), (289, 76077), (321, 68493), (711, 30923), (867, 25359), (963, 22831), (1343, 16371), (1819, 12087), (2601, 8453), (4029, 5457)]