20091880

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{21839}}^1$

素因数の和:21873

約数の個数: 32

約数和(自身を含む): 47174400

約数和(自身を除く): 27082520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 21839, 43678, 87356, 109195, 174712, 218390, 436780, 502297, 873560, 1004594, 2009188, 2511485, 4018376, 5022970, 10045940, 20091880]

約数ペア:

[(1, 20091880), (2, 10045940), (4, 5022970), (5, 4018376), (8, 2511485), (10, 2009188), (20, 1004594), (23, 873560), (40, 502297), (46, 436780), (92, 218390), (115, 174712), (184, 109195), (230, 87356), (460, 43678), (920, 21839)]