20898940

素因数分解:

$2^2\times 5^1\times {\mathrm{577}}^1\times {\mathrm{1811}}^1$

素因数の和:2397

約数の個数: 24

約数和(自身を含む): 43988112

約数和(自身を除く): 23089172

約数列:

[1, 2, 4, 5, 10, 20, 577, 1154, 1811, 2308, 2885, 3622, 5770, 7244, 9055, 11540, 18110, 36220, 1044947, 2089894, 4179788, 5224735, 10449470, 20898940]

約数ペア:

[(1, 20898940), (2, 10449470), (4, 5224735), (5, 4179788), (10, 2089894), (20, 1044947), (577, 36220), (1154, 18110), (1811, 11540), (2308, 9055), (2885, 7244), (3622, 5770)]