19979824

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{54293}}^1$

素因数の和:54324

約数の個数: 20

約数和(自身を含む): 40394736

約数和(自身を除く): 20414912

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 54293, 108586, 217172, 434344, 868688, 1248739, 2497478, 4994956, 9989912, 19979824]

約数ペア:

[(1, 19979824), (2, 9989912), (4, 4994956), (8, 2497478), (16, 1248739), (23, 868688), (46, 434344), (92, 217172), (184, 108586), (368, 54293)]