20778267

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{523}}^1$

素因数の和:603

約数の個数: 32

約数和(自身を含む): 31691520

約数和(自身を除く): 10913253

約数列:

[1, 3, 17, 19, 41, 51, 57, 123, 323, 523, 697, 779, 969, 1569, 2091, 2337, 8891, 9937, 13243, 21443, 26673, 29811, 39729, 64329, 168929, 364531, 407417, 506787, 1093593, 1222251, 6926089, 20778267]

約数ペア:

[(1, 20778267), (3, 6926089), (17, 1222251), (19, 1093593), (41, 506787), (51, 407417), (57, 364531), (123, 168929), (323, 64329), (523, 39729), (697, 29811), (779, 26673), (969, 21443), (1569, 13243), (2091, 9937), (2337, 8891)]