19703943

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 34145280

約数和(自身を除く): 14441337

約数列:

[1, 3, 7, 9, 21, 37, 63, 79, 107, 111, 237, 259, 321, 333, 553, 711, 749, 777, 963, 1659, 2247, 2331, 2923, 3959, 4977, 6741, 8453, 8769, 11877, 20461, 25359, 26307, 27713, 35631, 59171, 61383, 76077, 83139, 177513, 184149, 249417, 312761, 532539, 938283, 2189327, 2814849, 6567981, 19703943]

約数ペア:

[(1, 19703943), (3, 6567981), (7, 2814849), (9, 2189327), (21, 938283), (37, 532539), (63, 312761), (79, 249417), (107, 184149), (111, 177513), (237, 83139), (259, 76077), (321, 61383), (333, 59171), (553, 35631), (711, 27713), (749, 26307), (777, 25359), (963, 20461), (1659, 11877), (2247, 8769), (2331, 8453), (2923, 6741), (3959, 4977)]