21054616

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3571}}^1$

素因数の和:3655

約数の個数: 32

約数和(自身を含む): 43721280

約数和(自身を除く): 22666664

約数列:

[1, 2, 4, 8, 11, 22, 44, 67, 88, 134, 268, 536, 737, 1474, 2948, 3571, 5896, 7142, 14284, 28568, 39281, 78562, 157124, 239257, 314248, 478514, 957028, 1914056, 2631827, 5263654, 10527308, 21054616]

約数ペア:

[(1, 21054616), (2, 10527308), (4, 5263654), (8, 2631827), (11, 1914056), (22, 957028), (44, 478514), (67, 314248), (88, 239257), (134, 157124), (268, 78562), (536, 39281), (737, 28568), (1474, 14284), (2948, 7142), (3571, 5896)]