20645343

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{769}}^1$

素因数の和:951

約数の個数: 24

約数和(自身を含む): 31631600

約数和(自身を除く): 10986257

約数列:

[1, 3, 9, 19, 57, 157, 171, 471, 769, 1413, 2307, 2983, 6921, 8949, 14611, 26847, 43833, 120733, 131499, 362199, 1086597, 2293927, 6881781, 20645343]

約数ペア:

[(1, 20645343), (3, 6881781), (9, 2293927), (19, 1086597), (57, 362199), (157, 131499), (171, 120733), (471, 43833), (769, 26847), (1413, 14611), (2307, 8949), (2983, 6921)]