20572307

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{1163}}^1$

素因数の和:1215

約数の個数: 18

約数和(自身を含む): 25278588

約数和(自身を除く): 4706281

約数列:

[1, 7, 19, 49, 133, 361, 931, 1163, 2527, 8141, 17689, 22097, 56987, 154679, 419843, 1082753, 2938901, 20572307]

約数ペア:

[(1, 20572307), (7, 2938901), (19, 1082753), (49, 419843), (133, 154679), (361, 56987), (931, 22097), (1163, 17689), (2527, 8141)]