21286678

素因数分解:

$2^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{2617}}^1$

素因数の和:2716

約数の個数: 24

約数和(自身を含む): 37604952

約数和(自身を除く): 16318274

約数列:

[1, 2, 7, 14, 49, 83, 98, 166, 581, 1162, 2617, 4067, 5234, 8134, 18319, 36638, 128233, 217211, 256466, 434422, 1520477, 3040954, 10643339, 21286678]

約数ペア:

[(1, 21286678), (2, 10643339), (7, 3040954), (14, 1520477), (49, 434422), (83, 256466), (98, 217211), (166, 128233), (581, 36638), (1162, 18319), (2617, 8134), (4067, 5234)]