20788516

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{10457}}^1$

素因数の和:10539

約数の個数: 24

約数和(自身を含む): 42166656

約数和(自身を除く): 21378140

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 10457, 20914, 41828, 73199, 146398, 292796, 742447, 1484894, 2969788, 5197129, 10394258, 20788516]

約数ペア:

[(1, 20788516), (2, 10394258), (4, 5197129), (7, 2969788), (14, 1484894), (28, 742447), (71, 292796), (142, 146398), (284, 73199), (497, 41828), (994, 20914), (1988, 10457)]