21680708

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{10607}}^1$

素因数の和:10691

約数の個数: 24

約数和(自身を含む): 43959552

約数和(自身を除く): 22278844

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 10607, 21214, 42428, 74249, 148498, 296996, 774311, 1548622, 3097244, 5420177, 10840354, 21680708]

約数ペア:

[(1, 21680708), (2, 10840354), (4, 5420177), (7, 3097244), (14, 1548622), (28, 774311), (73, 296996), (146, 148498), (292, 74249), (511, 42428), (1022, 21214), (2044, 10607)]