21947128

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20627}}^1$

素因数の和:20659

約数の個数: 32

約数和(自身を含む): 49507200

約数和(自身を除く): 27560072

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20627, 41254, 82508, 144389, 165016, 288778, 391913, 577556, 783826, 1155112, 1567652, 2743391, 3135304, 5486782, 10973564, 21947128]

約数ペア:

[(1, 21947128), (2, 10973564), (4, 5486782), (7, 3135304), (8, 2743391), (14, 1567652), (19, 1155112), (28, 783826), (38, 577556), (56, 391913), (76, 288778), (133, 165016), (152, 144389), (266, 82508), (532, 41254), (1064, 20627)]