21591668

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{10861}}^1$

素因数の和:10943

約数の個数: 24

約数和(自身を含む): 43795584

約数和(自身を除く): 22203916

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 10861, 21722, 43444, 76027, 152054, 304108, 771131, 1542262, 3084524, 5397917, 10795834, 21591668]

約数ペア:

[(1, 21591668), (2, 10795834), (4, 5397917), (7, 3084524), (14, 1542262), (28, 771131), (71, 304108), (142, 152054), (284, 76027), (497, 43444), (994, 21722), (1988, 10861)]