20742520

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{2897}}^1$

素因数の和:3087

約数の個数: 32

約数和(自身を含む): 46947600

約数和(自身を除く): 26205080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 2897, 3580, 5794, 7160, 11588, 14485, 23176, 28970, 57940, 115880, 518563, 1037126, 2074252, 2592815, 4148504, 5185630, 10371260, 20742520]

約数ペア:

[(1, 20742520), (2, 10371260), (4, 5185630), (5, 4148504), (8, 2592815), (10, 2074252), (20, 1037126), (40, 518563), (179, 115880), (358, 57940), (716, 28970), (895, 23176), (1432, 14485), (1790, 11588), (2897, 7160), (3580, 5794)]